I just started detailing my Scion FRS today and I've run into an odd issue. I am using FG400 for compounding with an orange Buff and Shine mf pad then following up with PO85rd (I believe it is called SF4500 now?) on a black Buff and Shine mf pad. This worked great on my hood but my front bumper has a white residue on it after using PO85rd. There wasn't any residue after using FG400. I attempted to wipe it off with a clean mf towel with no luck of removing it. I can remove it by rubbing my finger on it which is odd. Has anyone else experienced this? What is the cause? Any help would be greatly appreciated!