I just fixed 2 copies of the 24-105mm (both had the infamous broken aperture ribbon cable issue). They are both working flawlessly, however, I have no way of testing the lens to see what affect on image quality removing and re-installling the two sets of eccentric adjusting sliders had. I would like to send the lens to Canon for adjustment before I sell one off, but Canon does not do up-front quotes without inspecting the lens. Has anyone sent a lens to Canon out of warranty for adjustment (not repair)? If so, how costly was it in the US? Any help or experiences are greatly appreciated.
I would like to be totally upfront about a lens when I go to sell it, and I would prefer to say it just came back from Canon for optical tuning (either way I'll tell the buyer I personally did the aperture replacement). If the cost for tuning is fairly inexpensive I'll do it, but if it's going to run $150+ then it won't be worth it.