Thanks txaggie. I'm a bit behind in posting so here goes.
I had to make a couple of air scoops for cooling. I made a plug from balsa and waxed it with Minwax furniture wax. Next I layed on 2 layers of 2 oz cloth and finished it off with 1 layer of .75 oz cloth. I brushed on a good coat of Zpoxy and let the scoops set up overnight. They popped right off the mold and I finished them up with a bit of 220 grit paper. Next I cut the air inlet holes in the cowl and glued the scoops on with medium CA. I smoothed the joint out with a bit of fiberglass based bondo then finish sanded then primed and painted.