Remote end 9352 replaced with end 9764 due to signs of an issue with the tong cable (tong opening excessively large and slack in cable on one side). Upon replacement tong opening on 9764 also opened larger then the remote end was set to. Everything is operational but this phenomenon indicates the handle cable system on operator side must be where the excess is coming for. This is further indicted but the position of the locking screw on the handle cable drum on the operator side, typically ccw of the hole location but now cw of the locking hole location. When there is a two week period between target changes in the NHC I would suggest swapping this operator arm with the spare.