If the goober tuned the bow with a different arrow than you shoot, then turned up the draw weight after he did his tuning, then your bow ain't tuned!
Also, even when he tuned the bow, he tuned it to HIS shooting style, not yours. You almost certainly grip the bow differently than he did, and that's only one of a long list of differences between your shooting style and his. Unless YOU do the shooting and the tech makes the adjustments to tune the bow to your shooting style, you will NEVER come out of a pro shop with a bow that's correctly tuned for you.
Learn to tune your own bow. Head over to
www.eastonarchery.com and look under 'Downloads'. Download their tuning guide and just follow the instructions.