Here are a couple of pointers that I have just learned from my latest experience with mounting my tires on my new wheels.
-Ask that they use sticky weights only. They should only use them but some shops like to still use hammer ons.
-Watch them, and inspect your rims a few times, and note all dings and scratches.
I took my rims and tires to Goodyear first to have them mounted. That was a mistake. The guy dinged my rim, and then tried to play it off like it came that way. They put hammer on weights on my wheels which scrathed the fuck out of the inside lip of the rim. However I sent my buddy down to drop the wheels off for me. That was a huge mistake on my part, as he went and got a burrito while this was happening.
The hammer on weights were so big that they wheels would not clear my suspension on my civic, and the wheels would just not turn all the way around.
So then the next day I went back to Goodyear and bitched, and the guy bitched back. I then got my money back, and took my business to a local family owned tire shop, and they did it right. If anyone is in the Monterey, Ca. area I highly recommend Newton Bros. Tires. They even gave me a discount as they felt bad about my previous service at Goodyear.
BTW - Offtopic, but that is a sweet Klein in your avitar, or at least it looks like a Klein with an Ultegra group on it.