Dose anybody know what's going on at fountain, I need a new sending unit no one is getting back to me I have the part number but don't know were I can get it.

Try "googling" the part number. I bet it will point you in the right direction or web sites that stock the sending units.

Got mine on ebay

I got one for my 32 at West Marine. Just have to know the length of it as the ohms should be the same. I forgot what they are but easy to find out.

If its broke replace it, if it is crazy it's normal, when it bounces off full you need a half tank at least that is what mine does after three.
Rich

Anytime the gauge falls off full, you no longer have a full tank. That's about all the gauge is good for. LOL.

However, recently ran mine till low fuel light came on. I still made it about 5 miles to fuel dock. So I THINK I've got a reference now as too how far I can go on low tanks.