yeah sort of. As I understand it the dome pushes more light straight out the front missing the reflector so removing it lets more light hit the reflector giving a tighter hotspot. You loose a little output but gain throw and the tint gets a little warmer more halogen like. That's about as close to geeking out as I can get, maybe someone else can expand on the theory.
I haven't tried the heat method as I read a few disasters with the tiny gold wires gettiing damaged. With petrol soaking it seems to just float off when its ready.
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