OK, if there are no other proshops around here is a way for you to set it up yourself.

1. adjust the height of your arrow rest. Your arrow rest with an arrow on it should be set so that the middle thickness of your arrow is in a direct line with the holes that are cut out and threaded on your riser that your arrow rest screws into (try to keep your arrow at 90 degrees to you string, no matter where your nock is set).

2. Adjust your rest for the right/left adjustment. Here is a little trick you can do. Put two allen wrenches in both limb bolts (one in each bolt). Take a rubber band and attach it to the allen wrenches. The space inbetween them will be close very close to your centershot. If you have a single cam bow, chances are that your string is offset somewhat. If this is the case you may have to adjust for this slight offset, ussually a little left. Try to eyeball it looking down an arrow.

3. set your nock at 5/16 above 90 degrees.

You said that they set your tiller for you, but you may want to check it again and make sure it is set equally. I usually check it by running some serving thread between the axles, and not using the bow string at all in the measurement. Make sure that the distance between the thread is even from the thread at 90 degrees to where the limbs attach to the riser.