Good to hear that you are enjoying it. I've noticed hesitation on my bike as well, especially when racing. When Im on the line and gas it right before launchingit hesitates a little then picks up and run hard for a stocker. Not sure what it could be, I'll find out in the off season.
I like the way your pipes are set up. Once I go 4 mil I may get CPI or Snipers. They get pretty good reviews on here.
Have fun