I'd say that any inconsistency in derailer positioning should be solved first; the Centeron-G float seems like a total band-aid to me.

And the way I see it, it's just as likely to aggravate any issues as to solve them, if not more so... the float equals a built-in lack of responsiveness; if the derailer is hesitating to shift, one of the most common problems, Centeron-G can only make that worse.

Its only function as far as I can tell, is to half-arsedly compensate for poor engineering. Well, I say screw that - make the system work consistently in the first place.

And that means more cable pull. Here's a thought for anyone struggling with S10 and internal routing with full-length housing - Shimano->SRAM Shiftmate at the lever, SRAM->Shimano Shiftmate at the derailer.

That, and/or segmented housing.