Please Help........

I have a Lanier F86 Sabre propjet with a tip stalling problem. The CG is already about 3/8"-1/2" forward. The plane does fly a little nose heavy. I do not want to move the CG forward anymore. The plane flys well but you have to land it very fast (I expected this, but it still wants to tip stall even at a pretty good speed). I have read somewhere about reflexing the ailerons up to induce washout. Would this help? If so, how much do I reflex them? Any help would be appreciated......Thanks, Steve