Thanks for all the suggestions. Never could get it to work with the 18350 config. I used about every combination of adjusting the top and bottom screws there is. I tried different 18350s, different cartos and clearos....none worked. Put it back in to 18650 mode and it works just fine.
Is there a good 18350 battery that is longer than an AW IMR button top 18350? I can't come up with another solution...although I'm sure there is one, and probably very simple.
Thanks