I've done the frame. Where I sanded it with 1500 grit and water then hand polished with mothers. It stays nice for a little while if you ride the mountain( I keep falling when it's muddy). I saw a polisher in Walmart which looks sort of like the mothers polishing ball which would work perfect oon all surfaces of the hub. @jfab if I would send you a frame, how much would it be to fab the mounts and such for the k5 to fit?