Funny you should say that..... I just did the same thing, and it worked.. I put some crazy glue into the hole in the rubber piece, then let the piston sit in it for a while before putting it back together.. Seems to work.. But the smoke unit is stuck "on", and cannot be shut off via the motherboard.. It turns on as soon as you flip the power switch to the tank on.. It comes on with the motherboard fan.. Stays on after I flip the toggle switch to start up the tank.. Flip the switch on the remote to shut off the tank, and the LED blinks after the tank shuts down.. But you can see the smoke unit running at full bore.. Smoking like a banshee.. I unplugged it..

The board is acting funny this morning.. Starting to get worse..