It seems I'm going to be asking a lot of questions I wouldn't have imagined before. Each time I solve something another weirder problem shows up. Anyways, I have a tiny trainer that I want to turn into a twin engine. Only problem is, the wing mounted motors are INSANELY wobbly. I don't know if this is from the wing being mounted with rubber bands or the distance from the motor to the fuselage or something else, but the wobble is so intense that it actually made the aileron servos stop working while it was running. Should I try to put a balsa beam through the wing or something? If I need to glue it down I can, I made an access hatch for that purpose.