Need some advise as a Heron noob on the used one I just got... a fairly early one I'd guess by the serial number. It only had traces of liquid on the deck, but the the GPin base on the inside under the deck where it's base rides on the positive pole had hard corrosion on it. That cleaned up with ISO, elbow grease with an eraser.
For want of a better name for it... I can't get the
tank ring to unscrew off the deck, it's frozen solid. Maybe also corroded? Tried a couple of those tight jar lid rubber sheets to get a better purchase on it, but it still won't budge. I could try removing the o-rings, poles, insulator and put in my UC (that also has a heater) and run if for however many minutes to see if that loosens things up. Anyone have any better ideas?
Thanks.
(not pics of mine obviously)