Should I try different shocks, spring clamps, slapper bars or Caltracs?
Hard to tell in the video (and yes the pictures are distracting in a nice way) - but can you tell if the weight transfering on launch? Maybe getting a little more wt on the right rear by raising the ft left? Other thing used by my co-worker years ago was to slightly pre-load the pinion snubber. He also removed the rear spring clamps - but I don't think you need to do that - he was running quicker with a heavier car and slicks, no street use. On launch the front wheels would come up maybe 6" to a foot and chassis was level... I wish I had the photo to share...