I have a new piece of kit to try out (review will follow). It has a needle in it and the needle needs to fit into the bottom of whatever kit is attached to it (more of this later too). Meanwhile.... I got out one of my beloved EM Riva atomizers (brand spankers no less) primed the coil with juice, got out a new drip tip and tried to fit it. It won't. The hole in the bottom of the Riva is too small. I then got out a Boge Cartomizer. This was not brand new, but had been primed with juice and put away, because, excepting within tanks, I have decided I really don't like Boge cartomizers. It fitted, the device fired up and worked. All is well except (there's always an except, isn't there?) I want to use an atomizer on this - it is what I wanted it for. So does anyone know if it will be OK to ream out the bottom of the Riva, with a drill, so the hole is the same size as the Boge? If it's not, anyone know of a range of atomizers that have big bottom holes?