Installed Clutch..Few questions?

[Mad Horse]

My friend and I installed my new King Cobra clutch this weekend. Everything appears to working properly. However, when I get above 2k RPM I get a little more vibration coming from the tranny?? Is this normal break-in or something to worry about?? I didn't get to do everything I wanted while I was doing the clutch because my friend didn't have the time and I was using his car lift. So I didn't get to have the flywheel resurfaced or replace the rear main seal. The flywheel looked fine and smooth with no noticeable marks or uneveness in it. I did replace the pilot bearing, throwout bearing, and bearing retainer.

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88GT 5-speed
Mods: Cervinis Ram air hood 3.73 gears, King Cobra clutch, Pro 5.0, March alum. Pullies, DynoMax Cat-back, K&N, 9mm plug wires, PS91 coil, Accel Cap/Rotor, 190lph Fuel pump, 16" Ponies.
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