Ya Randy dance has it on his avatar, gasman, maybe try another piece of tape, I,m of the opinion your not getting to the edge, and two hours? I can't even imagine that in a 1k. After 20-30 minutes it's time to evaluate the job again. With the usual bad geometry of those razors, you just may need to add a layer, like was said look at the very edge straight down with light and see if there is any reflections. Tc