Minn - it's the perfectionist in me! To the point you and others made earlier if the difference after sealing is not noticeable to the experts, a newbie like me will probably not notice it either. My thought was, it's only a little more work so what could it hurt?

I have only sealed the ailerons on the bottom of the wing. When the plane is right side up, moving the ailerons up is not too bad, but moving them down needs more force and concern me a little. It's hard to describe stiffness, but let's say moving down is noticeably harder than it was before I sealed it.