RickM46 posted:Thanks, I get it. There is a floor in the port/spout since it is bent to go inward and downward to the smoke units. That way, there is no danger of the plug going down into the channel. O rings are common at the hardware store; have to see if there is one .140" OD there. My foam piece is still intact but came off; will try a glue also. If that fails, then a piece of an O ring.
Took a shot at re-attaching the foam piece to the cover. Used isopropyl alcohol and a q-tip to remove the glue from the cover and the back of the foam piece. Used a dab of GE Clear Silicone (blue tube Walmart) on the back of the foam piece and pressed it onto the cover; waited for 24hrs for the silicone to cure before putting the cover back on the tender. Will see how long the foam sticks.