Ok guys. So I have a great success. First I called Faria, they have a gauge repair. After talking to their guy he said you send them your gauges and they rebuild. He said they take your faceplate and needle and install them onto brand new gauges and you get a 3 year warranty on that gauge, this is $100 per gauge. I asked him if it was ok if I took the bezel off and tried to fix my gauge before I sent it in, knowing all that was critical was the faceplate and the needle.
So now I'm on the project of dissembling the gauges. Taking the bezel off was easy if your patient. I used a 10mm combo wrench and used the curve of the head of the wrench to pry up the bezel slowing working my way around. Onece this was removed you have access to the gauge pull the needle off (this took more force than anticipated, be careful). Once the needle is off take off all the nuts on the posts behind the gauge and the board inside comes off. I noticed immediately that all the heads of the post bolts had green brass corrosion. I used 1000 grit sandpaper to clean the contacts on the board. I used a stainless steel brush wheel on a drill to clean the corrosion off the bolts. I then noticed other corrosion on the board so cleaned all surfaces with cotton tip and alcohol. I used a 12v supply to test the gauge. I placed the needle on gently so I could verify movement easier. After the cleaning the gauges both worked!!! I then put the gauges back together using channel locks and a piece of rubber to protect the bezel while re-crimping it back on. Reinstall I to the boat verify all and works. Saved myself $200. If they go out again this year I probably will just have them rebuilt by Faria. Anyway I hope this helps anyone with similar issues.
