I just bought one of these on ebay for $10

http://cgi.ebay.com/Timeless-TR-900-Prong-Arrow-Rest-Right-Hand_W0QQitemZ7118430898QQcategoryZ36099QQssPageNa meZWDVWQQrdZ1QQcmdZViewItem

I have an old bear whitetail II...the screw from the rest fits perfectly in the bow...my question is how do I tune this thing?...it comes with 3 tiny allen wrenches that can make adjustments on different parts of the rest...should I just start messing with it in conjunction with my 3 pin sight until I start shooting good groups or is there a better way to go about seting up and tuning a dual prong rest? Should the odd color fletch point down or out? Thanks for any and all help