So I got my expansion and GGTS base yesterday, but after I cleaned my whole Ody and changed the ceramic, I couldn't seem to make a coil without it shorting. I tried setting it up in GGTS, dripping, and 510 mode, all with the same results, all well as using 3 types of R wire, and both the silver and stock NR wire. I know that my coil wasn't the problem, but I just can't seem to isolate the problem. Can someone please post suggestions as to rectifying my problem? As a side note, there was an oring between my metal ceramic holder and center pin that melted, so I removed it and tried it with both the extra small oring that came with the expansion and also without an oring.