What is the FR/RR weight on the car? Relocate the battery further forward? Ballast the FR? Re-gear higher? All are options to check and consider. Soften the launch with either THR Expo or THR Speed is another option. Bleed the speed and power back in beyond the 6ft or mid-track marks.
Chassis set-up for my DragSpec cars is ~40/60 static FR/RR. My builds try to stay away from relying on a wheelie bar. Riding the wheelie bar sacrifices the ability to steer out of trouble on anything over a 2.00sec 132ft E.T. run. (quicker than 2.00sec E.T., you're just aiming the car-pull trigger and hope for the best) You'll need that steering to advance rounds.
Look at the RR tire set-up. Too wide? Too soft? Track surface compo? Know its "no prep", but tire 'cleaning', aka off track softening, also plays a factor.
Caveat. Short wheelie bar is useful in hand staging the car. My personal preference is radio staging, but most (read all) sanctions use hand staging.
Lots to unpack with an RC drag racing launch. Good luck. Hope this helps. -AC