I suppose I will take the first crack at your questions.
What is the difference between Spiritual Regeneration and Gospel Regeneration?
I believe that spiritual regeneration is what occurs when God places that "feeling" inside the heart of one of His children. As with Saul, he knew that the Lord was the one talking to him on the road to Damascus, but he did not know the particulars of the Christian beliefs. He just knew that this person was the Lord and he must serve Him. This regeneration, as seen in Acts 9, came not by man, but by God.
Now, as far as gospel regeneration, I don't believe in it. Of course, what many people would consider regeneration through the gospel is what I consider conversion through the gospel. In Acts, Saul (Paul) was regenerated on the road to Damascus, but he was not converted until preached to in Damascus by Ananias.
You say believe in the TULIP principles, but you define them differently. Give me some examples of this.
I think the biggest difference is the "P" in TULIP. We believe it as preservation of the saints, not perseverance. This is where our belief in timely vs. eternal salvation comes into play. We believe a man can lose the joy of his salvation, i.e. church fellowship, comfort in the gospel, etc. by not obeying God's laws and straying from righteousness. However, we believe that this has no bearing on that child's eternal salvation.
We do not believe everyone will persevere, always remain in the faith, until their death. Perseverance would say that if a man doesn't persevere to the end, he was never really a child of God. We dispute this. Preservation, as stated in our Articles of Faith, states that His children will not fall finally away. In other words, Once saved, always saved, basically.
What kind of evangelism do you practice and believe in? Please give examples of what your church does in this area.
This is where you get into differences, even among the Primitive Baptists. My church, for example, does not believe in "evangelizing", so to speak. We believe we should always be ready with an answer when someone questions our beliefs. We should always be ready to teach what we believe to people, but we do not go out of our way to try and "save" people in the world. We believe that once a person is regenerated, they will be lead by God to the place he wants them to be.
Of course, there are some PBs who have gone overseas to establish so-called "missions", though different in practice and purpose than Missionary Baptists. They are out spreading the gospel, which I don't disagree with, depending on their methods. I don't disagree with a preacher feeling lead by the Spirit to go preach here or there. But, we would disagree with a practice that is trying to save people through the gospel.
Jeremiah 31:
34 And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more.
Hebrews 8:
10 For this is the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people:
11 And they shall not teach every man his neighbour, and every man his brother, saying, Know the Lord: for all shall know me, from the least to the greatest.
12 For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more.
Are most PB churches or hardshell churches KJV only?(the ones of I know of around my area are)
Yes. We don't feel the need to improve upon something that is already perfect the way it is. We do consider the KJV to be flawless. We feel it is the translation God set up for the English speaking world. Of course, that does in no way leave out our responsibility to study the Greek and Hebrew to delve into the reasons such words were translated in such ways and the ancient context of the texts.
Are most PBs Baptist Briders?
You'll have to explain what you mean by this. I'm not familiar with this phrase.
Do PBs or Hardshellers all only have one service a week or do you have others?
This varies from church to church. Depending on the size, average age, dispersment from the church (distance from home to church), etc. We used to hold Sunday morning and Wednesday evening services, but our current Pastor lives 50 miles away, so we did away with it. Some churches also have Sunday evening service, but not too many.
Also, probably 90% of PB churches have at least one weekend-long meeting/Association per year. We usually meet on Thursday or Friday night and have preaching and singing through Sunday.
I hope I answered your questions well. If any other PB can see something that I left out, please feel free to add to what I said.
God Bless. Bro. James