I just tried white Cermark for glass for the first time. I have an epilog 45 TT. I sprayed it on and lasered it at 100 speed 32 power. It wiped off with barely a mark. I went down to 25 and increased my power all the way up to 60 with the same result. Has anyone had good results with this. The instructions say don't dilute. Does anyone dilute with dentured alcohol?