I have a two channel powered glider "Calypso" by miniCraft. I broke the wing (flew into a fence post on a dead stick landing) and the nose so I put a spare wing on it and built a new nose. This wing has a flat bottom and quite a bit of dihedral. It has about the same area as the original wing, maybe a little less, but it's rectangular where the original wing was severely tapered with dihedral tips. Anyway, since I switched out the wing, my plane handles as if it has 2/3 left rudder even though I have it trimmed max to the right. If I give it full right rudder, it will straighten out and maybe turn a tad right, depending on the wind. Prop angles to the right a tad. I have shifted the battery etc so it's even slightly heavy on the rhs. But the darned thing just wants to go left. If I shift the wing over to the right, reducing the wing area on the left, it helps a bit but not much. Yes the nose angles slightly left, but the motor/prop more than offsets this.

Also, with a 600maH NiMH, I get about 3-4 minutes on full and half power before the battery fades and the motor throttles back to about 1/4 power. New battery, (fairly large) brushed motor. Are brushed motors inefficient? How the heck are these FPV guys flying 15 km on a battery?