Need help from the suspension gurus here!

So you went from 100 lbs/inch to 250 lbs/in. That is a significant drop in stored energy. I changed torsion bars from 1.19 IIRC? to the slant six bars. High 290’s lbs/inch to 100 lbs/inch. Went from no movement to full transfer of weight. With the big bars it just barely twisted the bar at all! It was a street car then. Also you took weight off the nose. I’ll bet that spring is barely compressed at all, requiring the tire to do all the lifting.