I've just started using base/clear to paint.(used acrylic enamel before and laquer primers) and I'm having trouble with orange peel. I wouldn't worry about it but I don't want to sand and buff the interior and would like it to look as good as possible. I'm using NAPA Crossfire products. I'm mixing the 2 part primer, the base coat and the clear according to the tech sheets except I put 10 percent thinner in the clear. Ive been told by a few painters this was acceptable and will help the thick clear come out of the gun better. I've adjusted my air pressure at the regulator to about 40 lbs. This gives me about 10 lbs at the gun.
(I'm using a gravity feed paint gun. Also for the first time.) I was told to try the following by a painter friend.
Lower air pressure: This seemed to make the clear come out thicker though and orange peel more.
Thin out my mix a little more.
Keep adjusting the mixture at the gun.
Most of my problem seems to show up while applying the clear. The base was fairly smooth.
Are these probable causes?

Can anyone else offer some tips?
thanks
Jim

"Just a little discouraged"