there are plenty of internet sites that dial in your optimum frame size based on body measurements for free and you can do it on your own. sorry to say it man but you were the one out of line. imagine if you were selling a bike on craigslist and someone showed up and asked you to take time out of your day to explain how to fix a problem he has on his other bike - but he doesn't want to buy your bike. and from talking with some of my friends that work at bike shops you were probably customer number 73 in a long line of lame customer requests...