Well over 50 Hitec Digital servos of all sizes in Jets and props. Only ever had a couple fail on the ground while setting up which was 100% my fault. Like already stated try slowing the plane down and put the flaps down slowly like full size does. Also try and not pull 30 G and maybe the plane want fall apart either. Sorry just had to throw that in.
Ok I'm now sitting down with my pop corn and ice cream so fire away LOL

The couple I had fail where on valves when I was setting my plane because they where binding. Again 100% my fault. Hitec all the way for me.