i have a 63 chevy 2 with the heidts rear 4 link in it for the novas it has a moser 9" with 3.90 gears and an aurburn possie its all brand new the rear third member was set up by moser i broke the rear gears in first on jackstands then i drove it around town after i put a couple of miles on them i decided to launch the car after doing this it started making a noise when i brought up the rpm it sounds like a hum what did i do wrong and is there anything that i can do to fix this i havent even got to go down the drag strip yet