Thats all it is Dave, you have to keep it in lower gears at slow speed. Mine is as lumpy as hell if I try and get it to pull at low revs/high gear.
As for the finish, Ive had a few Kwaks and all of them go a bit rough looking on the metal work but they last as well as any others.
I was talking to a fella the other day and he was on a 650gs Dakar, it was an 2006 and it was well rough. I asked if he had done the dakar!.
My tip is to make sure you have enough WD40 to scare the neighbors.
"Whats in that thing??", An R1 owner said.