Mine came today yea ..popped in a head filled her up put it on my Darwin and ....no love pulled it apart put it back together nada took it back apart put the other head on and it lives....glad it came with 2 heads!! Are these things rebuild able or fixable ??
Easily re-build-able. Fixable? Depends what's wrong. If it's open, you MAY be able to pull the pin and or bottom gasket to see if you can make the coil leg make contact. If shorted, the coil is either touching the metal side, or to much wire was left outside the bottom at the base.