If not metal gears, at least beefier than stock. I was stripping servos left and right, some even with slightly harder than normal landings. I put some metal gear servos in them and haven't had a problem since.

I wouldn't consider it overkill. Try it out with the stock servos for a while and see how it works out. I could have been a particularly unlucky consumer.

Have you had a chance to fly it yet?