So I haven't even driven the car, but the place that put the flywheel on says it's not balanced right for the car. I got it from a place that said it was for my year mustang. They're leaving it on, I don't want to pay more for labor, but is there anything I can do to get it balanced right? Or would I have to return that flywheel for another? =/ I was looking forward to today, but now I'm dreading the drive up there to get my car... he said it shakes really bad. Thanks for any help.