69 Barracuda Clutch Shake Help Needed.

Well I started this thread back in May and after lots of new parts and work on this car, I'm still shaking on easy take off and hard launch. Not all the time but it's still there. When I added the 6 degree shims after the super stock springs didn't cure the issue I thought at least I had the ease out shake behind me but after driving it the last few days, it is still there at times. Back to the drawing board I guess.