WE use standox aerosol primers no problem.Don’t use etch aerosol primers .
TO cut a long story short .HV High volume of paint LP low pressure of air.HVLP
I WOULD stick to what mocoke said.we some times have this problem.But we no why we have the problem,The cars we work on are on the forecourt and valeted, and the valeters use silicon products.Especially the Tye clean.
Sorry i should of read your piece
it seem to me you are cut and BUFFING the same day you are clear coating.After you clear coat and bake and take it out the oven.Its best leave it 4 a day then polish it.
SATA 2000 hvlp, good ones on ebay very good gun