Adjustment
Most of the stuff above about Cessna's it true there is a cam in the wing root mountings to adjust the incidence.
The only roll adjustment that you can use on a piper is the flaps very little movement of the flaps can produce a lot of trim, IMO this Piper needs all the control setting back to the factory settings and then adjustments made from the factory settings to get it to fly S+L? It should be remembered that you need to set the Aleron neutral settings with a rigging board and tool to set the position of the belcrank.