When I had condensation in my g2 taillights, I took them out and removed the wiring and gasgets, then boiled them in a big pot to soften the glue, and then I removed the lense and re-sealed the whole lense to the fixture. Its hard to seal it perfect, but it did make a big inprovement. I used fish tank glue (silicone), but I think there may be another sealer out there that would work better.