Hi guys,
One of my other craft is making me pull my hair out! its the misses boat a 2001 RXdi. Since having it back from having the gel coat looked at the speedo is playing up. It works periodically, doesnt matter if fast or slow?! but needle will just pop up whilst riding for a couple of seconds then drop away again. I ran my air line over the wheel and it worked perfectly, but in the water it doesnt?!

any ideas