Matte PPF *Decontamination HELP

We currently have a C63 in our bay that has rail dust and contaminants on the PPF. Have tried clay, nanoskin, matte detailers, cleaner wax, apc and nothing has touched it. Looking for some recommendations as Venture Shield and Xpel have not returned my calls. Thanks in advance!


Spent 9 hours getting everything else dialed in: leather, carbon, wheels, exhaust, trim, and jambs have been addressed.

 

Try mothers pre wax cleaner. I had a lot of black marks that I couldn't get out on a matte white e 63 till I used the pre wax cleaner after I used it was all gone.

 

ValuGard Neutralization System