Jim,
Sorry I missed your question on your post about having a sis named cindy in Fla. Nope...have a sis in orange city though, only realtor in family is daughter and she lives in Md. Anyway...I finally got my tank mounted. I didn't mount on floor but mounted inverted and it clears floor but is still low enough for the low carb on my 160 twin. I also made a ply mount for the edr on board glow and mounted it on top of the tank. If I remove the two screws shown in picture I can slide the whole assembly out or just the tray for the edr. I read that Dick Pettit put his edr on top of the tank and it still balanced where it was supposed to so here's hoping. I believe in his report he stated the edr weighed 14 oz. I weighed the entire tank assembly with the added ply and the edr and battery on my gram scale and it was 340 grams which converts to 11.9931471 oz. Must have done something right for a change. Will run battery charge wire and glow light through instrument panel when I get one. Almost forgot to mention...the ply plate that holds the tank is notched and is held in place by the ply brackets and screws, the tank is slid back some to keep from interfering with the two bottom cowling screws, don't need screws into the tank!
Note: Added pic.with notch.

Bud