Broke an axle today, got hop ( slip/grab ) off the line. Was slight on first few launches, more pronounced on the last/fatal one. Question is what is causing this. I was launching sans burnout ( street tires ). I did a short one on one pass and got no hop, guess was snotty enough not to grab. 3400lbs, 2200 converter, c-6, foot brake, leaving at about 2100rpm. Tires are 31 inch BF Goodrich Silvertown radials running 26lbs pressure. 4 link setup, pinion set about -5deg. 250lb coil-overs. smooth as silk any other time. Any ideas?