Originally Posted by
xenologer
-build up the center channel with multiple narrow layers of velox rim tape, followed by a more normal width one on top to smooth it out
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I'd bet that this would fix the problem. Add enough layers to make the valley level with the shoulder. And NO TAPE on the shoulder. The tape up where the bead rests is a no-no.
[MENTION=429363]DQRider[/MENTION] I'd love it if you tried this because I'm 99% sure xenologer is correct. Personally, I believe the 28mm tire is a 100% non issue.