I just recently picked up a FP-T7UAO transmitter and PCM receiver with servos and charger like new still in box. I know this is a fairly old design but appeared to be in pristine shape except that the batteries were suspect so I replaced them with new batteries. After charging the batteries and connecting all together things seemed to be working fine. However, when I tried to program in dual rates or expo the three switches that switch from hi to low do not seem to have any effect. When I try to set different throws for the hi/low rates, the programmed changes (when I change it with the + or- keys, both hi and low switch positions follow the latest inputs. By that I mean that if I have the high rates set at 100% then throw the switch to the other position and program the new rate to 50% both the high and low rates are now at 50%; i.e. no change when I toggle the rate switch from high to low. This occurs on rudder, elevator and aileron rate switches. I have other Futaba transmitters that program in the same manner and all work well so I am reasonably sure I'm properly programming the unit. Any suggestions on what may be wrong or what I may be over looking? Thanks