Actually, 2.2x sixties are pretty common for me. I'm actually shooting for 2.1 (best is 2.201). The big difference was the clutch slipping at launch (which I thought was wheelhop until yesterday). For example, I launched at 2250 before and still bordered on breaking the clutch loose all through first. Yesterday, I was launching as high as 3000 and hooked HARD. Just gotta get the hang of intentionally slipping it until IMRC opens (i.e. no bog), and I'm golden, as well as launch a bit higher too. Also, the shifts all grabbed noticeably quicker this time out - traps at the 1/8 were ALL higher than ever. It just felt AWESOME - I knew I did sub-15 before I got my first time slip.
