Just my $0.02 but after getting an Aspire coil rebuilt I make sure the leads are snipped extremely tightly to the grommet. If they are not snipped as tight as possible, when you screw your head back into your device base you can easily SCAR the inside of the base as you screw the head in. If you do not snip properly and closely you are basically rifling the base of your device much like a gun barrel.
This is probably vaping 101 but though I would throw it out there.
This is probably vaping 101 but though I would throw it out there.