If an electronic part is going to fail it will usually fail in the first 30 mins of use. I really doubt that the manufactures test the servos for this long. Its really no big deal give the servos a test -Most of us do it without even knowing it when we set the models up the elecronics get a good workout on the bench. If you have JR you can use the servo test function and let them run for a bit.Just remember that you really cant do it in the model- in this mode the servos drive to the full travel and you would probably overtravel the setups. Scott