David/doxilia,
Thanks for your reply. I think part of it is force of habit, as I used the Futaba 136 in several planes. I have one or two of them, and want to make the equipment/setup identical in both planes. You're correct in that if the servos are physically close to the same size, I can just swap them out, including the arm. I'm probably over-thinking the issue.....
I'm not familiar with a programmable (for end points) retract servo. If the servo can be adjusted/programmed for the end point, does it draw current at each end? I've always set retracts up using one servo and it's worked.

David/dhal22,
I've had a nasty experience with Hitec and would prefer use another option if possible, but I appreciate your suggestion. I'll keep an eye on eBay, 'cause you never know what'll show up!

Thanks again for the input.

Kevin