Pete or any one else, have you taken a look at the Xpert servos. There are a few that might meet our needs and are light in weight. I know John Tarpinian has a few he is going to try.

http://xpert-rc.com/product-list/

I think these were the ones he said might meet our needs.

MI-3301-HV
CM-2401-HV
PM-3402