Panel prep leaving a film - what to do?

[aludd]

I`m prepping a nearly new car to apply Wolfgang Uber Ceramic Spray Coating, and following directions I cleaned the surface with Wolfgang Perfekt Finish Paint Prep. What I`ve found is that the Perfekt Finish Paint Prep is leaving a film behind. It`s really noticable on some piano black trim and tinted windows. After doing a bit of experimenting, I`ve confirmed it`s the Perfekt Finish prep that`s causing the issue, not something that was already on the surface. If I get the window nice and clean with a glass cleaner and then clean a section with Perfekt Finish, the streaky film comes back. Sprayway glass cleaner (alcohol based) seems to remove the film best, but IPA works as well.

I can`t see the film on the paint in my garage, but I`m not sure if it would show up in different lighting. If it shows up on the glass, I`m thinking it must be on the paint as well and seems wrong to be applying a coating if the surface isn`t perfectly clear. The piano black trim looks terrible after the Perfekt finish.

The Wolfgang instructions say to us the Perfekt Finish before applying the ceramic spray coating, so I don`t know if there`s supposed to be some reaction between the two.

So do I reprep using IPA to clean everything? Or trust that I won`t see the film when I get the car outside (raining now, so can`t check)? Or??

Thanks!

[craigdt]

your towels/whatever aren`t contaminated, are they?

[aludd]

Just checked - same towels wipe clean with IPA. Good thought.