I get an e1 on my provari occasionally... (pretty sure that is low load?) and yeah, about halfway
thru the
tank they started leaking like a sieve. The bottom connector looks like it is slightly shorter, thus causing the e1. Haven't found a reason why it'd leak tho, and I do not have any more wick without cannibalizing some more heads. Anyway, the protank heads are now in stock and I switched to that and they work great, lol. Either way, if someone knows of a fix that'd be good.