Ongoing saga. Rode the 2000 K12 to work to check for bugs before vacation Wednesday. Everything seemed fine except the fuel gauge wouldn't go all the way to full (20 miles on the odo). While on the way to work at 30 miles the gauge dropped to 1/4 then slowly rose to about 3/4. At 40 miles it dropped to the white wide bar at the bottom then rose up again. I feel that this has to be an electrical resistance problem. The connection on top of the sending unit is clean and greased with di-electric grease. The tube has been inspected with no dents or damage. I checked the resistance with the sending unit out and it seemed to follow the movement of the float. I don't remember the values but it is on a previous post and I can find it if necessary. Am I missing the boat on connections? Are there any others? WTF? I dislike stuff that doesn't work properly.