I've owned my jeep for about a month now and after doing all the standard tune up stuff i'm starting to work on things that might take a little more time. My fuel guage is the first on my list. when running, the guage jumps all over the place and I couldn't tell how much fuel I had in the tank. yesterday I changed out the pigtail that goes from the tank to the guage, it was all corroded inside so i thought that would do the trick, it didn't and it still has a slight tick. any ideas what this could be? has anyone else had this problem?