Starter Rebuild, Shims Questions

[Gs1100]

Hello, so I'm going to rebuild the starter with a brush kit but have a question regarding the two long exterior bolts holding the case ends together. I haven't got the brush kit yet but when I was just putting the starter back together I noticed that if I tighten the exterior bolts so that the o rings are snug, I cant turn the shaft by hand. If I loosen the bolts enough, I can eventually turn the shaft by hand but there's quite a gap between the case and o ring. Is this where the shims come in? Ie should I add more shims when I get the rebuild kit so that the o rings are snug and so that I can turn the shaft by hand?

Thanks

[Doug]

Kinda guessing here as I don't have a exploded parts view drawing .. is the armature fully seated in the bearings/housing? Has something dropped into the bearing recess that prevents the arm from seating?

Is there a "step" in the comm due to wear that is hanging something up?

[Guest]

Make sure the markings line up.