Mine did that kind of when I changed the color of them, The one side was very faint and you could hardly see it. All I did was just re-do the install of the new color and it works perfect now. I'm sure there is a how-to if you want to get to it and check it out, if not you can you the new guage install how-to and it will get you very close to where you need to be. If you have any ?'s feel free to ask
Probably won't be back on here until monday after today though.