Originally Posted by thagood

I'm studying the thread because I also have an issue with rear wheel alignment; I've been doing the hold to center and tighten method for some time with limited success.

Trying to stick something to shim in there with a tube is, I think going to be problematic, but the guy who suggested filing back one of the dropouts is on to something. Ever heard of a rat-tail file; that's the tool for the job.