Chris, nice Corsair, it looks like you have the gear dialed in! Thanks for the lead, I hadn't heard about the microgear sequencer before. I know about the Jomar, but it looks like the microgear fixes some of the Jomar shortcomings. In my opinion, you've got to have end point adjustment otherwise you can spend hours trying to tweak the door linkages to work just right.

I think the JR channel expander concept will work, and I like the idea of using a separate battery for the gear, but it feels like I'd be using the wrong tool for the job. I'll probably go with the microgear, since you know how things usually work out when you try experimenting.