[TenTec] PTO Rebuild or not?

[Curt]

I own an Omni D that works well and enjoy using, except the PTO is beginning 
to drag.  Have the kit to rebuild it, have never done a rebuild before, but 
am reasonably mechanically capable. TT tells me the price is $125 to rebuild 
it, and then of course the shipping will likely add at least another $50. 
They tell me alignment after rebuild is probably not necessary.

So, appreciate advice about rebuilding/having TT rebuild it/ or avoiding the 
issue by just selling the rig,    Finally, assuming I rebuild, what is the 
best solvent to remove the old grease?  Is Varsol ok?

73, Curt KB5JO