The document discusses an issue with an IGV (Inlet Guide Vane) actuator on a gas turbine during startup. Specifically: - The IGV blades, gears, pinion and actuator were replaced during maintenance in April 2013. Since then, during startup the IGV opens beyond its normal limit of 57 degrees to 72 degrees before returning. - It is suspected the issue may be related to the replacement of the IGV actuator. Suggestions are made to check the servo valve, LVDT calibration, regulator gains and manually position the IGV to diagnose potential mechanical binding. - More information is requested from the operator on control constants, calibration data and manual operation checks to help identify if the cause is