Getting old and had to ask for a reminder from Nick, 212. The main rotor servos on the 76 were placed in a not normal position for other reasons, and the solution to obtain control orthoganality ( choice of words questionable ) was to add another bar in the mixer to account for that. So yes, the 76 mixer has one more function than the usual. Messrs Bursteiner and Irons, the designers, did not require a shrink, but gained some new respect for the accomplishment.