I know this is a reletivley common problem but now that the bike is running well i want to start tackling some of these minor issues. The fuel gage does not work. I pulled the sending unit and it "looks" fine. Should i just replace it or are there other things i should look for? Are there any electrical tests that i can do to check for current? I dunno. I tried my test light with no results but i am not very swift with electronics. What to do first?