projector headlights

Hey i got some projector headlights from ebay they looks good but after a few months one of them started to ground out and wouldnt work. SO I opened it up and rewired the ground, after alot of trying and error. I finally got it right but I now have alot of dirt in my projector light that came from where the srews go into that mount the light.

Question has anyone removed the light cover and cleaned it. I tryed but the glue or the stuff they used to seal it makes it hard to remove the cover.I was thinking about some type of solvent to put on the glue.

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