PFL have clips and seals, but aren't a problem because they're sweet sweet glass.
Facelift uses black butyl. I took mine apart to take out the ugly orange reflectors (you might want to do it while you're there as well!). Be patient and start at the corner by the indicator, for some reason it's weaker there. I didn't need to cook mine, but I know some people do. If anything, leave it out on a sunny day and you shouldn't have an issue.
As to the fogging, it's likely off gassing of some sort, as some invisible glass and a microfiber towel brought mine back to perfection. Post your results when you're done!
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