last week i put some brand new RPM monster claws wheels and pro-line maxx mulchers on my savage. very pleased with the combo...lighter than the stockers and have awesome grip everywhere. well today i took them out for there real first bash session at the bmx track, and while doing my after-run maintinence i noticed the area around the locknuts the "chrome" has started to show stress cracks or lines were the finish has been severly flexed. is this normal? or is one of my wheels going to go flying off soon after my next big air session? anyone else have experience with RPM monster claws?