what battery are you using? what tailcap? You might want to try the paperclip across the tailend of the body trick to eliminate the TC as the culprit. Have you tested the malkoff in another host?
Turns out it was a spacing issue. I added a small magnet to the tail end of the battery and it fired right up. The parts were as follows: sf z68, e2e tube,sf adapter from lu60a, 6p bezel, and malkoff m61.