My gauge never goes up to the full mark.  Now I'm replacing the tank and
have the sender out, and sure enough, when the fuel sender arm is up to the
top the needle is about 1/8th inch shy of full.   Bentley does not have ohm
readings for the sender, does anyone have a new one lying around they could
test for me?

Or, should I just replace my 27 year old sender as a preventive measure?

Thanks!

Stuart

'85 Westy