Spec Stage 1 Clutch Opinions?

My opinion now. I installed a spec stage 1 about three yrs ago. Worst clutch Ever. From the first time out until now it shudders like an earthquake. Unless I pull this and find that it's contaminated with oil or grease, never again.

I only wanted a small improvement over the stock clutch. What I got was a clutch with all the driveability of a Sherman tank. There are times where it shudders so bad that I'm sure people on the sidewalk feel it.

My god i've used some full on race clutches with solid hubs in the past. Purpose built drag cars that had better engagement feel.

I'm absolutely certain it was installed correctly. I'm a transmission tech with ford so I get a lot of practice.

I have read that they need some break in time! Well the car is not driven a lot, but certainly enough that this should not be an issue. Absolutely stock car no mods of any type.

I'd like to change it, but customers cars come first. I'll give ya this it does not slip.