i got a pitch pipe. that thing sucks. all out of tune. the guy at the music shop tells me a pitch pipe isnt supposed to exact, just an approximation. well what the hell good does an approximation do me? my metronome plays pitches, but i think thats out too. or maybe not. but jamey abersolds a=440 sounds like a=441 on my metronome. sure not a huge difference but big enough. is my metronome off too? what does everyone else tune to?