If I am remembering properly I think once I had an issue with FK425 messing with a fresher application of Colli 845. I believe when I brought it up people said I was crazy and the issue was on my end. But since then I staid away from that combo.
Its also harder for me since I basically went to coatings in place of waxes. I was never big on paste waxes myself for some reason.
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