I get rubbing of keycap stems on housing top openings with all gateron milky switches, including Tangerines, FEI, Giant and Punchy recolored switches. I will never buy another Gateron switch with a milky top. Unfortunately I own several hundred that I'll probably never use.
Bought a bag of milky Gateron blacks a few months ago. They were horrible.
Thank God for Durock. You have to use switch films with their housings, but they are my go-to for linears now.