Yeah, overall OEM is pretty poor quality. Alot of members lights have had condensation. You can reseal around them with silicone and make sure the gaskets are sealing for the bulbs as well. Make sure they are dried out before you re-install them.
Another big problem with them is delamination. Around the outside you'll see where it looks like it's pulling apart or bubbles. I don't know any great fix for that. Pull off the lense (bake, heat gun, etc.) or tint them so you can't see it. Don't know if you have that problem.
