something was wrong. I love my lemo and prefer it over any kayfun and I've went pretty low without any problems. this is something that you'd expect to see with a .1Ω build. Did you by chance have it on a mech mod that auto fired or the button got stuck for a LONG time? And can you return it to where you purchased it from to ask them for advice? If not................
I know Kidney puncher sells delrin replacement insulators for kayfuns for like 4.99, not sure if this could be used as is in the lemo or if it would need to be modified but this definitely is fixable. its only an insulator. All hope is not lost. Hope this helps.