Cheers guys, so if this is user error - whats the best way to get a 2 stroke off the line quickly, I've tried revving it high feathering the clutch and re- revving pretty hard and popping the clutch - found out it pops up pretty quickly like that

My technique that got it bogging down was revving to @ 6500 - 7500rpm then dumping the clutch and twist on the throttle to WOT ... ( probably not very technical but worked on the CBR)