Would any of you pro's help me along on this one?

After many quotes and opinions on painting my elcamino, I've decided to do much of the work myself, but I need the help of the guys on this website as usual.

I'll do the stripping, filling and priming, then haul it to the body shop for painting.

I've decided to use all PPG products.

Based on the car having the original lacquer paint under another layer of unknown paint with clear coat over it, everyone agrees I should strip to bare metal and remove all old filler.

At the suggestion of the paint store, the system
I should use is as follows.

Apply plastic fillers
Etch wash with DX520
Condition with DX579
Coat with "corrosion resistant primer" NCP271
Block the entire car
Apply topcoat (undecided on BC/CC or SS as of now)

The etch wash or conditioner P-sheets make no mention of wiping off the residue that remains after applying and rinsing these products off.
Should I remove this residue?
Also there is no mention of using these products over filler?

Any comments or suggestions are greatly appreciated.

Thanks in advance - Joe

In my opinion I'd stay away from the metal conditioner. I've seen to many adhesion problems do top improper use. The metal conditioners were originally designed for prep before application of laquer primer. The new self etch and epoxy primers do not need the metal conditioning step. I personally prefer epoxy primer as a base for all including polyester fillers. Epoxy has worked well for me for many years now. Many people prefer to use a self etch primer which works well but is forever soluable. I have used self etch many times but have never seen any noticable benifits. Self etch primers in my opinion do not seem to be as sensitive in reguards to cleanliness do to the higher content of slovent and acid. The filler primer you suggested is an excellent product with proven performance.