Tom,
I'm confused on your adapter and since I don't have my tru turn spinner yet i'm really confused....best bet is to pm Dick Pettit, he has the 160 and a tru turn spinner, i'm sure he can set you straight. Those connectors are the same as a Y connector without having an actual Y in the wiring, there's a block that two servos plug into side by side and the other end (single male) plugs into your receiver. I think it just makes for a cleaner connection...there's enough wires dangling all over the place. I mailed Futaba and got an answer in 5 min.!! Can't beat that for customer service. I was finally able to disable my flap knob so now no worries of moving it by mistake while handling my transmitter. Hope you feel better. Don't forget your camera on your Alaska trip!