I don't think moving the CG forward will help alleviate your tip stalling problem because it's a wing/wingtip design issue. Even if you move the CG more than 1" forward, the plane will still tip stall. Moving the CG forward will make the plane more stable but will increase landing speed. Deflecting both ailerons up about 1/16" will create somewhat of a wing "wash out" and will decrease the tendency to tip stall, provided that you have barn door ailerons and not full length strip ailerons.