t5 trans swap?

Finally started the dart the other day.Got the hyd clutch blead out and adjusted ,but:( Ive got a real bad vibration while revving the engine in neutral.To me it feels like there is an imbalance in the flywheel /clutch assy.The higher I rev the worse the vibration.My engine is internally balanced and the flywheel is supposed to be a zero balanced piece(no counter weight).I never had any vibrations before the swap,so its something I did or a parts issue.I guess I am pulling it apart and sending the f/w and clutch to my local clutch builder and have him ck the balance on the assy.

justin