Geekmedic, you might try lowering your coil a little, closer to the air hole. Occasionally when I do a new build on these I get the ohms all over the place deal too. Something about pushing it down a bit seems to steady everything as I am checking this while I tweeze together a micro-coil. Pushing down a bit shouldn't change a thing, but it just does for some crazy reason????
I might add that the Kayfun Quartz tank does fit the mini Erlk. Because it is shorter there is about a .5mm gap at the top. This doesn't seem to effect vacuum or cause it to leak. Pretty awesome for a buck thirty. I also throw away the original O-rings and replace with new black ones. They seem to have more heft than the originals and keep a tighter vacuum.
The only thing I don't like about the mini Erlk clone is the air flow. The silver box clone has much better air flow. I will probably fix this, but for now it will do.