“The coils have always lasted a good length & have been very happy with them over a long period of time. However, I noticed that the style has changed (you can see the difference between pic 1 & pic 2 - used to be columns with 3 holes, now just the 1 hole & different top). I’ve found that this new style leaks whenever I refill - not when I’m using but just at refill. First draw always leads to a leak & I can hear it “bubbling”, so I take tank off, clean up all contact areas & then it works properly. No idea why this should be. I found an old style one which I fitted & it doesn’t do that, so it can’t be tank/battery fault. ?? If not for this new anomaly, it would have had 5*”
