Questions for the painters...

I have no doubt you can read. Comprehension is probably the issue. It clearly says epoxy and poly primers should not be applied over SELF ETCHING PRIMER. At no point did you say you used self etch as this would be your reasoning behind the issue of compatibility between dp and slick sand (there is absolutely no compatibility issues with this combo)... I have sprayed HUNDREDS OF GALLONS OF DP WITH ZERO ISSUES EVER. Please don't let your inexperienced problems misguide another novice. It gets really old reading the arm chair painters advice to people who don't have a clue if the information is correct or not. No further comment.
I see you can't let it go. I didn't say you don't know what your doing. Why do you think it's ok to say that to me? you don't know anything about me, my experience, or what I'm capable of. It's fine if you don't agree. I just related what happened to me, and made a suggestion to the OP. Please tell us O Great Painter, what we should say , and how we should say it so you don't get your panties in a bunch. I hope that car in your avatar is not what you claim to be your body work knowledge. The car in mine was done by me. Quarters, floors, wheel housings, inner front fenders. Passenger fender, Passenger door. All bodywork and paint was done by me. Assembled by me. Built the engine, suspension, and everything else was done by me. If you want to keep arguing for the sake of it, PM me. I apologize to the OP.