Quote - 1st. How do I remove/hide the unwanted parameter dials. I assume that was a function of the joint editor but it's escaping my intellect I guess

Edit the CR2 to set the unwanted dials to hidden.

Quote - 2nd. Is it possible to remove the textures called for by the 'donor' figure. And if so how?

If you have materials showing up that are no longer required, you'll need to edit both the CR2 and the OBJ (or whatever you've used for the geometry) to remove all references to those materials you no longer require (but be sure that you have actually assigned some material to every polygon).