Jefro,
Thanks for responding. Nope! I've bowhunted for years, relying on what little knowledge that has been available. Ah, but now, cyber space!!!
I haven't

the foggiest notion when it comes to tuning with paper. You asked whether or not I knew what to do if the paper tore in a certain way. I do not.
I just purchased a Parker Extreme Ultra-lite, and have been shooting it for about a month, now. I can group the arrows very well; however, they very often seem to be leaning in a direction from which I did not shoot. Is that an indication that finer tuning would help? If so, HELP!