23-06-20, 10:40 AM
Those gauges are like mine. You can calibrate these. With nothing connected, take of the lens and adjust the brass screw until all the gauges read the same. Once all "zeroed" you should try them all on the same cylinder to check the reading is roughly the same on each gauge. Once done, you can connect to the other cylinders to confirm if the cylinders are out of adjustment or not.
Another ex-Fazer rider that is a foccer again