What was found
CARBURETOR THROTTLE ARM HITS REAR CABIN HEAT SCAT HOSE, RESTRICTS FULL TRAVEL. THE ROUTING OF THE SCAT HOSE CARRYING WARM AIR FROM THE MUFFLER HEAT SHROUD TO THE REAR CABIN HEAT CONTROL VALVE CAUSED THE THROTTLE ARM TO CONTACT IT BEFORE THE THROTTLE REACHED THE FULL POWER STOP. IN ORDER FOR THE THROTTLE TO REACH THE FULL POWER POSITION, SUFFICIENT FORCE HAD TO BE APPLIED TO DEFORM THE SCAT HOSE.