Just as a general comment on tube quality...
This year I have repaired a number of wheels that had blowouts of tubes. Not just cheapies either, even Continental! The new Tervail branding has yet to have a good record but the previous Q tubes and now Tervail have not been problematic. They are made by Kenda which is OK, but the Chinese Kendas seem to be trouble while the Taiwan Kendas arent.
They all still leak down way too much over time. I fond most are 10 psi/week.
-SP