water condensation is very common not only to aftermarket units but as well as OEM ones... yeah just chuck them into oven and melt down the seals... take the lenses apart and firsly wipe clean the plastic covers...
then buy some high quality WATER-PROOF cilicons to re-seal the units...
my aftermarket projectors in my MDX had water marks when i received them.. so i did above steps and its still as clean as it could most...