The tails all look ok to me, a bit on the weak side compared to some of my other planes. Here's some pics and I might just flip the rear stab over so the horn is on the right instead. I'll move the rudder horn onto the left and swap servos inside. I'm not sure what that'll tell me if it changes , but if it does change the behavior then I know I am onto something. The rear of the plane is very strong anf the fuse has no noticeable flex. The rear stab does "steer" right and left a bit of slop in it.