When I bought my truck it had a Autometer egt and boost gauge set in it. The boost gauge has always been about 7-8 psi off. Not a big deal I rarely ever look at it. But know my EGT gauge is sticking most of the time I have to tap on it to get it to read correctly. Is there anything I can do? Other that buy a new one. I have used Autometer gauges before and had no problems.