I am in the process of fixing up my sons 99 xr100 I have added a moose stator and a headlight/tailight because it needs to be forestry legal here in Canada. Now I am trying to get some rear brake power because I need to push them so hard to get them to work at all and when they do finally work they stick on and then release. This bike sat for 6 years without being used.I took the brake drum apart and have brake cleaned and sanded the drum and shoes,my question is can anyone tell me how thick the shoes should be they are approx 1/8" right now.The cam is also moving freely. I don't think this bike has that many miles on it so I can't see that they would be worn out yet.My son is 10 and I have to get this bike to be safe. On a side note we originally bought this bike new and then sold it to a lady who left it sit all these years so I know the brakes worked when it was new.