it is a big deal, period.and you should not set your bows ata exactly the same on both sides at rest unless you have a shoot thru cable system. you should also not set the string coming off the bow exactly straight at full draw unless you have a shoot thru.

here's why its a problem - the lean does NOT stay the same throughout the draw cycle.if its starting out left to right - it may be going right to left at full draw, or even still left to right - but either more or less. this creates right to left string movement during the shot cycle. this is a big deal. how would you know about cleaning up horizontal misses unless you've set your bow up w/ a full draw tool and lasers? there is an article on cam lean at the spott hogg website. it will tell you how to set it properly, and explain all the theory behind it. if you want to learn to work on bows - get the full draw tool by apple, and either an apple or spott hogg laser system - understand the theory, and apply it. it works.

and i can guantee you when ausie gets his butt up here, and we go over the theory, he'll have every bow with him on the tool and lasers. heck, i may be bringing my stuff down there sooner than he thinks and get him all straightened out over a pig hunting week