No hurry at all. I probably won't even do any more to mine until monday anyway. Yeah I'm running a ProGear chain from Hughes. I don't doubt it's some thicker than the Cat gear but not 3/4" thicker which is just about what it'd have to be since you had to have a .210" spacer just to get it to clear the T. cover and mine is out almost 1/2" past the T. cover with no spacer. It sounds like your PRW balancer is different dimensions than mine, but that's just my guess. Since I bought mine over a year ago and you just bought yours they would have had time to change something.