Don't try to build the combat A-10 in DF type,at least the 0.25 engine DF! I have built one with YS-45 pusher and the finished weight is 3.5 kgw!It is the same weight as his bigger brother F-16N.Because its over-weight tail,I need nearly 1000g to balance the nose!If you
built the DF type,I believe it will exacerbate!!After finishing it fly very fast and it is suitable to be the Jet trainer.Perhaps you can try the electric DF because the electric DF effeciency improve greatly recently!