Have you tried these nozzles? I find they fit onto most PG and VG bottles and they make pouring an absolute breeze.
Lol, I actually have some of these nozzles at home from the days in the very beginning when I just started mixing and they came on the 50ml bottles which I mixed my juices in. Never gave it a thought to use them for my PG/VG.... Will definitely try it out, thanks.