time to learn how to talk the talk or take a walk... you probably sounded like a total idiot and a waste of time
you have to realize that bike shops deal with the free advise seeker for an average of 20hrs a week now think you aren't buying enough stuff to offset their time so no **** you get a little attitude go buy yourself the park repair manuals and read em... stop wasting the poor bastard at the bike shops' time

or you could always ask him what kind of beer he likes and hook him up with a sixer if your looking for a free education