I have a potentially different "fogging" problem...
I have not seen any droplets form on the inside of the plastic lens, but I have a definite area directly infront of the Xenon beam where the plastic is no longer clear. It appears there is some type of film that has collected in front of the beam. It's almost in the shape of a donut.
Any one else out there with this issue?



I've outlined the area in the below photo...