Originally Posted by steve617
He built those Mavics and maybe I should just get him to check the tension every 500 miles or so.
Make sure he PREtensioned them. I've built weaker rims up for 200+ lb sprinters (they will beat up wheels harder than you ever could) and they don't come out of true for many miles. If he is tensioning them properly, and you're not riding like a maniac (take it easy over bumps) they should last at least a few thousand miles before you have to have them trued and retensioned.