RE: bow tune ups
I work at an archery shop so I' m lucky enough to have all of the equipment at my fingertips, as buckskin mentioned, I tinker with my bow almost constantly, I' m always trying new methods and new things. Plenty of times, this ends up setting me back instead of forward and I have to return to where I was previously.
Working on your bow and keeping things in good shape helps to give you more confidence in your setup and therefore helps you to shoot better. If you only use your bow a little, at least make sure the string stays waxed, and the bow gets greased once a year or so. When you take it in to be greased, you can have the shop check your string to see if it needs to be replaced. If you dont shoot often, and you wax your string enough, it shouldn' t need replacement every year.
It definitely doesn' t take much time to go over your bow with an allen wrench set to make sure everything is snug each fall as well.