Just for kicks, lets discuss this senario. My J5 doesn't fly straight without a little control input as follows. The tail will skid to the left without constant left rudder (just a little bit needed) and the right wing will fall off to the right if you let go of the stick. ( still only needs a little pressure). Would you fix it or fly it. Otherwise it handles great as far as stall characteristics and slow flight. We checked the rigging according to Piper rigging procedures and the right wing has no washout in it, left wing was right on. Thought we had found the problem, So we rigged it according to procedure with exact dihedral/washout on both wings and the results were very surprising. It increased the cruise speed of the airplane by at least 5-7mph but compounded the skid/heavy right wing. Wow, didn't expect that. Whats the next step. Put it back and make minor adjustments on the left wing. Thought this would be fun for discussion.