Will be interesting to see how you go.
HERE is an install on a Z33 if you haven't already seen it.
Have you done the quick wire cross to change the +/- around on the gear shifter? (ie pull back to change up through the gears 1,2,3,4,5 and push forward to change down through the gears 5,4,3,2,1)
If you have, will this make a difference to the paddles? Would suck pretty bad if it did.