Help with appearance_info.RDAT wingspan

Hi all, I am trying to edit the wingspan outside of blender so as to keep accessories in place but I'm not sure which values to edit in appearance_info.RDAT to make this happen. I've tried editing rightarm.tx, rightarm.ty, and rightarm.tz (as well as the left equivalents) both up and down but nothing increases wingspan/ arm length. The only thing that changes is arm/shoulder width. The model I'm trying to edit is Old Wilt Chamberlain (png0752.iff).

For shoulder width look for "rightArm.ty":and "leftArm.ty" - Change both to same number
Most players are usually (17.99999999999,)

For arm length look for "rightHand.ty": and "leftHand.ty" - Change both to same number
For short arms use (26.0,) and for very long arms (29.0,) but you can adjust to your liking

For body length look for "spine2.ty":
I think (12.75,) equates to about 50 -the middle measurement used by CAP.
Increasing the number shortens the torso and lengthens the legs. Decreasing the number lengthens the torso and shortens the legs

For neck length look for "head.ty":
Increasing or decreasing the values will change the neck length

For shoulder width look for "rightArm.ty":and "leftArm.ty" - Change both to same number
Most players are usually (17.99999999999,)

For arm length look for "rightHand.ty": and "leftHand.ty" - Change both to same number
For short arms use (26.0,) and for very long arms (29.0,) but you can adjust to your liking

For body length look for "spine2.ty":
I think (12.75,) equates to about 50 -the middle measurement used by CAP.
Increasing the number shortens the torso and lengthens the legs. Decreasing the number lengthens the torso and shortens the legs

For neck length look for "head.ty":
Increasing or decreasing the values will change the neck length

You’re a life-saver, bud. So strange that arm length is tied to the hand.ty values. Thanks a bunch!!