My stab fit was just right. I used epoxy to glue it in.

My washers were also too big to go through the hole. I turned them on their edge and pushed them through. It left a little dent in the edge of the hole, no problem. Then I push a 1/8" piece of fuel tubing over the bolts and they always stay in the wing. There are two different bolts for the wing, I beleive it was the long ones that go in the front.

Richard
Tomball, TX