Originally Posted by Dallaz

When you are ready to put your lights back together make sure there is no dust on ANYTHING before putting them in the oven or it will be inside after they are back together. Just press them together as good as you can before placing them in the oven at 250 degrees for 10 minutes, the same way to took them apart. After the 10 minutes in the oven, immediately press them back together and put pressure on every area (best with 2 people) and have one person screw in all screws while the other is holding the light with pressure. I did not use any additional sealant, there really is a lot of silicon on both sides of your housing once they're separated and I did not feel the need to add anymore, as well as many others who have done this.

NOTE: when you pull your lights from the oven for reassembly, there will be moisture on your HID lens, which promptly dries and leaves no marks, it's just the heat pulling in moisture from the rag you had wet under your light in the oven.