If I am reading this right, you substituted a wood screw for the 1/4" nylon bolt? the wood screw will rip through the wing as the head is not near as large, and in the case of a rough landing, the nylon bolt is designed to fail rather than damaging the wing, most of the time. Get a 1/4" drill bit and drill out the hole for the wing mount, (wooden block inside the fuselage) and epoxy a piece of a 1/4" dowel rod into the hole. After the epoxy cures, put your wing back on and use the proper drills re-mount the wing. Tap the hole, use thin CA to harden the threads and run the tap through again.

Epoxy or CA where the wing meets the Fuselage? You don't want to permanently mount the wing to the fuselage. If you are trying to build up the wing saddle, peel the covering away gently, CA or epoxy a piece of balsa along the top of the wing saddle, and sand it down to size, then use a covering iron to draw the covering back down.

As far as the pushrods rubbing. If you are using 1/2" foam, you can drop back to 1/4" foam and see if that helps. You don't want anything rubbing.