This occurs while I am working over plans mainly. I also think the culprit could be that I am working with Ply, and not just balsa. Where I am in trouble is where I put a small blob at the top, to let it run down the joint, but it always ends up being too much.

Is there a specific brand of wax paper that works? I am using Cut Right, and CA sticks very well to it. It claims to be wax paper.