the needle on both of my tachs sometimes bounce around and don't read accurately. I think it's related to the guage itself vs. the sending unit because if I tap the guage the needle will move and seems to settle to where it should be. I've removed the panel and checked connections and all wires seem to be tight w/no corrosion. I didn't put any dielectric grease or anything on the connections, but it doesn't seem like it's the connection. So...I think it's the guage, but wanted your opinion on if you agree it's the guage, or something else. if it is the guage, how to you recommend I proceed? I believe Faria has a lifetime warranty, but I'm not sure and need contact info. Thanks in advance for your help!