Hello everyone, I am new to the Centurion Family and just recently picked up a 2002 Centurion Eclipse. Boat is in immaculate shape and only has 202 Hours on the motor. This is not my first boat but this is my first "ski" boat. The question I have and I have been looking all over for the answer, is above the steering wheel below the gauges there are 2 control knobs that turn clockwise. This may seem like a stupid question, but what are they for? I have only taken the boat out once for about 30 minutes for a lake test. but I did notice that the gauge needles would jump all over the place when those knobs were turned. Any information would be gratefully appreciated! Thank You!