i got a cracked 721 at the weld, right across on both sides. is the rim still useable? i am slightly pissed at this as the rim is only 5 months old. although i cant really complain as the sun rims i used before were stop sign shape when i retired them. it was on the front wheel and there are no dents at all on the rim, i only have two dents on the rear rim. and if its relevent i checked the tention of the wheel just last week, making it was even and true.