I have been following this thread for some time now, after I ordered one from FT. (22mm, SS + Glass tank (2*Spare Decks) SKU 1899301, it is no longer on their web site.) Received it today and knew what to look for, or I thought I did. 510 pin is so long it will not screw into any mod and it is as far in it will go. Took it to bits and it will not go in any farther 2 to 2 1/2mm sticking out of the post. I think this is a new issue from everyone else.
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Filled the tank up with water and after a short time it was leaking, so what else is new. Back to China with the glass tank version of Chucky.
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Dam it! That's the same one I'm expecting in a day or two...
But I find it easier to shorten parts that are too long, then to stretch the ones that are too short. LOL