Originally Posted by
bobthib
No, more likely it is what JoelS suggested. Don't know how the limit screw might have gotten out of adj. The only RD problem i've had since I got the bike was a barrel adjustment to cleanup shifting. A bike wrench in our club did that for me after the bike had about 500 miles on it.
That's the tipoff. RD trim doesn't change with use, except sometimes for a slight adjustment, as new cables settle.
Here's what might have happened. At some point, either because of a crash, dropping the bike, or rough handling the RD hanger got bent inward slightly. This threw off the trim, which you corrected, but it also affected the limit screw positions which you didn't correct. End result is with the inner limit now slightly inboard, it just needed a hard shift into low to overshift into the spokes, either the RD itself, or just the chain which jammed against the spokes.
Lesson --- Whenever you suddenly find the trim off, correct
both the trim with the barrel adjuster and check the limits. This is especially if the RD doesn't shift crisply into high, requiring the outer limit to be backed off. If the outer limit is too far inboard, probably the inner limit is too.