OK Here I go, Are heavy duty studs worth it? The # 2 Cylider is dirtier or a little rustier than the other 3.Do i hone or rebore to next over? standard rings? Do I really have to change the primary chains? The cam chain rollers and slider are brittle so those will go new which by the way where is the best place to buy what I need? This is my first time at a rebuild so any advise is greatly appreciated! Don't wanna bomb you all at once,that's enough for now I guess. Peace , Timmy