Violent Take-Off Shudder

I had the same problem, very bad shudder going into 1st, checked pinion angle, added shims, same problem, the new clutch I got from brewers turned out to be bad, I changed to an OEM style 3 finger clutch and fixed the issue, brewers refunded the purchase price of the clutch. I know it’s hard to Believe that a brand new clutch could be bad, but it does happen. I got the replacement clutch from rock auto it was a perfection clutch