I dont either but being such a small thing i didnt mind. What was worse was waiting for things to dry.
Well i finished them i got them all nice and what not, then i went to fit them once finished i saw that i had left fingerprints on it, tried to wipe it off just made it worse by smudging it, mind you the mirrors were drying since Sunday arvo. Since i spent so much time prepping i didnt feel right just leaving them like that. So i adjusted them sanded them down and applied another final coat. Below is the result, looks alot better than when i received them