I am getting ready to mount the cowl on my Sig Kadet MK II with an O.S. 35 AX. I want to get the gap between the spinner & the cowl as close as practical but do not want any interference or fouling. To me, too big a gap just looks bad. In my attempt to achieve the best compromise here is what I have so far. I cut a shim piece to establish a consistent 1/16" gap out of 1/16" balsa, it actually measures .062" with my dial calipers. Here is what it looks like:


Is this about right? Or am I being too picky thinking it's a bit too big? I have a piece of 1/32" balsa that actually measures .042" which is actually closer to 3/64" with which I could make a shim of and it would definitely look better, but would it be enough of a gap? I would rather go with the .042" for looks but I am unsure if it would be adequate as I do not know how much movement the front of the engine will experience.
Thoughts and opinions please!