Hi Ron
Your welcome, I used to use polyesther resin a lot, they are thin and very easy to spread and paint inside cowlings,pipe tunnels and of coarse glassing cowling and front ends, but with the introduction of the
polyamide resins (finishing resin), they are thin easy to spread, and so much more friendly to work with, plus the ones I use mix 1 to 1.
if you have not tried them I highly recommend you do.
Hobby Poxy and ZAP makes them, along with the BOB Smith line of epoxies
Regards
Randy