Vibrations after clutch install possible?

[SpicyOrange]

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I am currently trying to chase down I am having with my 95 GS-T. I bought the car as a basketcase and had to buy a clutch and re-install the tranny. Now I have a bad vibration at that starts at 3500 rpm and up, and a light shake at idle, I originally thought that it was a balance shaft problem and replaced The belts and realigned the balance shafts. everything was perfect when I took it apart but I re-did it anyways. I bought the car with the tranny out because the kid took it apart to replace the clutch (Spec stage 1). He neversaid that he had these vibrations and I am starting to suspect a flywheel/clutch problem since the vibrations are definately in the engine area and not the tranny/driveline since it will vibrate with the clutch in or clutch out. moving or not moving. I have checked the motor mounts and found on the drivers side to be torn, but even holding a pry bar against it will not get rid of the shake. It feels like something is off balance.

Has anyone had balance problems with their aftermarket clutches? I have a SPEC stage 1 clutch that I just installed 300 miles ago and this motor has shaked since I got it running. How do you fix the imbalance problem? Can a machine shop balance the clutch and flywheel together?