Originally Posted by
L Lee
The rear wheel is out of line, but only a few mm - apparently this is the result of doing 120 to 126 (according to sheldon brown's site). The cure is apparently to re-dish the wheel though this weakens it.
You still haven't explained well enough. Did you change the WHEEL from 120 to 126, or the FRAME? Changing the frame alone and putting a random 126 wheel in will not require dishing of the wheel, unless it was wrong to begin with.
IMO, dish isn't the biggest thing in the world. I've run wheels that were dished wrong and never noticed anything bad. Honestly I'm not even sure what the effects are.