I put my gauges in a year or two ago and installed my fuel pressure gauge with the isolator and didn't have any problems out of it till about a month ago. The needle in the fuel pressure gauge shakes really bad back and forth and makes a bunch of noise. It still show good pressure, but it doesn't move smoothly, it is always rattling. It also changes as you push on the skinny pedal. It doesn't hurt anything, it is just loud and annoying. Could it be that my isolator is just worn out? Any suggestions? Thanks...