Replacing the sender on these cars is childs' play compared to some others. After reading your post, I wouldn't crawl under the car without a new sender in hand.
One tip, The new sender will include a new seal and locking ring. Throw the new locking ring away and reuse your original locking ring with that new seal.
Thats my plan, got to run the tank if gas out then I will get into the sending unit. Does the tank need to be dropped to change it or will I need to drop the tank?
I dont have a problem with using the old ring, just wondering, I assume the new ones don't line up right?
we will see whats up with the sending unit in a week or 2, I will be going out of town this week to meet my son for the first time!