I'll share whatI know. First off, degrease and blue loc-tite everything w/ threads on your bow. Benching is my favorite test method, remove all the human error you can then practice and practice some more.I shoot carbons as they are either straight or broken. others prefer aluminums. Are you using a rope cocker? If not, mark your serving w/ white out w/ bow uncocked at the edges of the rail, then when [if] hand cocking, check to see if the marks are even. They won't be quite in the same place as uncocked, but should be even w/ both sides of the rail.A rope cocker does this automatically for you. The common lawn mower handle type rope cockers work great, but on most Hortons you have to put the hooks on the string upside down so they don't engage the safety prematurely. You can make an arrow spinner for virtually nothing by epoxying two marbles next to each other at the ends of about a 14" 1x4. This will help you see if alums are bent and is a handy tool for removing run-out in bheads, another whole chapter in misery at times, lol. there's a start for ya!! good luck and welcome to the forum, great buinch here!!