360 balancer question

Hey guys running an external ballanced 360 here when rebuild had everything ballanced and all that good stuff. installed a b&m flex plate and had that ballanced with engine...so last night lost my ballancer on my car...i mean its still there but missing most of the rubber....whoooops!...any way i need a new ballancer..do i have to have the whole engine re ballanced now?? what ballancer do you guys recomend.. i would prefer not to yank engine and tear it all down but if i have to i have too....i used the stock ballancer with the engine build and had everything ballanced with my flex plate so that i could run a nuetrally ballanced converter? i need help..what should i do??

Thanks,