There should be no stiction in damper tube/cartridge when cycling damper rod through stroke. I hope for you, that when forks were revalved/rebuilt the damper tube hasn't been clamped in the middle. You can only clamp damper tube near top of tube where peening holds the 2 pieces of cartridge together. Anywhere else will very likely distort cartridge. As for bushes, i had 2 sets with about 30k km each. Inboth sets, stock ano wore, as did Kashima recoat,no bush had any measurable wear. Could have continued to use them.