A BC mechanic should never tell you they cannot pinpoint the problem, they should never tell the customer that..... I don't care for so called mechanics that throw parts at a problem until it's solved, anybody can do that.... There is a BIG difference between a parts changer and a mechanic.
The manufacture would always like the customer to think that if they bring the machine back for dealer warranty or sevice that the problem will be solved just like that. While often that is the case, the fact still remains that they have no more voo doo powers then anyone else and from time to time a problem comes along that is truly difficult to diagnose for anyone.
I would hope that the joystick could be conected to something to test them, and maybe the mechanic cycled them 50 times in each function and never found a problem, but you went to work and cycled them 1500 time the first day and the problem still existed.
Thats where I feel the whole notion that "the operator need know nothing about the mechanics of the machine" as the factory would like you to believe, falls apart. The operator is the only one who know (should know if he is good at his job) exactly how the machine is working.
A local Bobcat mechanic told me of a 773g with joysticks that was pressure washed and quit working because the wire harness got wet. And who does not need to wash there equipment now and then to prevent fires. His advice was to stay away from joystick If you wanted to service the machine yourself, Because they were a b*tch even for the dealers to work on.
Ken