problem with center diff

[wolfen]

i think the problem is the center diff i tried to run my buggy just put a new clutch in and it would rev but nit wouldnt go forward so i took it apart and i noticed i forgot to shim the center diff so that done start it up again and it went forward for a bit then again it would rev but no foward motion im getting very fustrated with this someone pls help

btw when i shimmed it the gears meshed great now they arent

[wolfen]

i fixed the mesh problem but i melted my gear carrier look at gear carrier thread