Quote - You're welcome.  No, you're not being inept.  In fact, based on the picture you posted, it looks like you had gone about as far as you can go without adding the custom JCM.

Remember, when making a JCM, if the joint's rotation is a negative number,  your deltaAddDelta will also be a negative number.  If the joint's rotation is positive, the deltaAddDelta will be positive.  The formula used to figure out the deltaAddDelta is:  Divide 1 by the joint rotation.  For instance a JCM to fix a thigh bent to -90 would be 1 / -90 = -0.011111

You can also leave the JCM channels unhidden until you've made sure they are working correctly.

Good luck.

You're a star - thank you again!

DS3D