[Rob Simpson]

Hi All,
New to flying the 337 all be it that I have had the aircraft for a few years whilst updating panels and radios. The aircraft is S/N 1807, a 337G model and when we got the aircraft, the left aileron trim was set to max up deflection and the right to max down.
It has installed the no gear door mod, Horton STOL kit and lots of antenna on the roof as it was used as a survey aircraft for a while.
Rudder, aileron and flap rigging has been checked and nothing is showing up. we did find one of the stall fences slightly off set, so removed, made new mounts and reinstalled just in case.
Went through the rigging procedure in the manual for the rudders and set them to 1/4 inch to the left with the nose wheel off the ground and then went flying with the aileron tabs set to zero and found that the left wing is extremely heavy and requires a fair force input to get the aircraft to maintain wings level.
Reset the tabs to where they were when we got the aircraft and it will fly straight, but doesn't look right when you look at it on the ground.
The Horton wing cuffs look like they are equal, and when you slow the aircraft down, the forces to hold it decrease dramatically ( with the tabs in neutral)
With the tabs offset, the rudder trim is about 1/3 off to the left.

Any thoughts would be greatly appreciated.

regards

Rob