Upload & Sell: Off
I sent the lens into Canon and they are going to do the repair at no charge. I don't know if it's because somehow they were able to determine that the lens was still under warranty (I didn't think warranties transferred in any case) or some other reason...but it works for me!
I know its been awhile now, but if you happen to see this, do you recall if they give you any indication what the problem was and what they did to fix the issue?
I just bought my first L lens used, the non IS version of the 70-200 f4, and its got a slipping/stuttering issue when the focus ring rotates from left to right, but its ok the other direction. I'm having to manually override to get to the focus point. When it finds focus its sharp. Mine is a UY1219 series (late 2010 build). Its mounted on a 30D with about 70k clicks - old but trusty.
I'm on the fence if I should just keep it and get really good at manual focus, unload the lens at a discount with disclosure, or send it in to Canon Canada for service. The bench charge is $259 + tax and shipping, which is alot for the non-IS version.
Just wondering what they did in the repair, and how is the lens holding up since?