OK. I ordered another one of these RTAs a little bit ago and have been having problems with jumping ohms and shorting like crazy just like my first one but worse and the first one seems to be OK now. BU t this second one is pretty bad after a couple weeks of use.
I finally figured out the problem and the solution...
The problem is the post at the top side of the "cylinder" under the deck "the part that the positive lead post screws into from the top and the positive 510 screw threads into from the bottom) is a tad too long. As a result, if you put screw the deck into the base even just snug, this threaded post might come in contact with the underside of the deck and cause a short. Problem is, if you don't screw the deck into the base tight enough, you may get ohms jumping.
So you can look at this problem as either the post itself being too tall or the little black oring not being thick enough.
The solutions are...
1. Find a oring that is thicker whereby making the protruding part of the post shorter or
2. shave the post down a hair with a dremmel or file or
3. find another small but very thin oring to put on top of the existing oring whereby making the post shorter.
For now, I chose to go with solution #3, however when I am 100% confident I have solved this issue (I'm only 99.89% sure at the moment), I am going to implement solution # 2.
Here are pics to illustrate my implementation of solution #3. In my case I used a rubber positive pin insulator from a kanger coil.
Edited on 11/1/2015 at 1:59 AM. Reason:
Vaper buys pod system, asks for a 510 adapter. LOL for days