Using an amp meter can let you know if you're overdriving or stalling a servo. Before it's too late.
I guess I should try it. I don't even do it in 2 servo wings, now do I have equalizers. Just mechanically adjust by feel and sound. I've only burned up one servo since flying 100cc plus planes in 11 years. Am I just really lucky or am I draining batteries and putting a lot of strain on my gear?
Probably both. I'd at least recommend putting an amp meter online from your flight pack, and deflecting each control both directions, one at a time. You'll see quick if you've got any issues.
Can you recommend a good amp meter.
I just soldered some ec3 connectors on the one end of a servo extension to connect to my watts up meter. Joe Smith recommend one from Taildragger RC if I remember correctly, that one can do up to 4 servos at a time. I'll have to have one of those. I think it's Hangar 9 that makes one also for one servo at a time. The multiple servo meter would be handy dandy for surfaces that has multiple servos.
I highly recommend that you use a meter to set up your servos. I've tested surfaces that from normal amp draw to binding draw was just a degree or two of deflection. I wish somebody told me about this a year ago when I started flying. I know of 2 of my planes that it would have saved.
I think it was Fromeco he was thinking of http://www.fromeco.org/Products/05FRCQCM/