CN90, the more I read and with the symptoms I am having I am kinda doubting the transfer (siphon) pump. Here is why! The fuel gauge errors are consistent with wrong readings regardless if the tank is empty or anywhere in between and at full. I am gonna go pick up a bottle of Techron as you advise and see if that helps.

Question for those that have cleaned contacts on the sending unit. I have taken the seat off and see the inspection (or replacement) holes for both the fuel pump and what I am guessing is the transfer (siphon) pump.

Can anyone point me to a thread that shows how that is done?
Big thanks in advance.