its the great planes cg balancer. we have it set up properly as far as we know and its worked top notch with all our other planes we set it at the proper cg recomdations and line the leading edge of the wing up with the little metal arms flush with the edge of wing. we have balanced and alpha trainer, a twist 40, a tango, and a goldberg tiger 2. all have worked well just this dazzler is acting really weird and we cant figure out why. i mean we have it apparently sitting just slightly nose heavy right now becasue it was quite tail heavy so we started adding weight to the fron nose thnking the nose would come down but instead it kept getting more and more tail heavy so we started adding weight to the tail and the nose started to come down. its completly backwards.as far as we know we now have it sitting a bit nose heavy, but w cant figure out why it was balancing ass backwords! and im a little worried that things might not be what they seem and something bad is ognna happen on first flgiht,lol. and like i had said previously evn balancing on finger tips it was still reacting the same way as well as right side up and upside down