I recently noticed some damp/misting inside my n/s rear light cluster so removed, drained and towel dried the inside (cloth on a stick method) then used Mrs Ursa's hair dryer to clear the rest. A week later i notice its damped up again and wonder if this is a common fault as i don't see any cracks in the lense itself. Can this be fixed with a bit of clear silicone on the seal or tiny holes drilled rather than £400 on a new cluster? Anyone else experienced this and whats the resolve?