When I install a peep in a bow I get it set perfectly to the customers eye and move it back or forth very little to get it as straight as possible. Then serve it in very tightly and make sure I keep it straight. Of course this is doing it with a G5 meta peep or tru peep that you actually wrap the serving around. I've never had a customer come back in with twist issues or had any with my bows. Most all of these have been with factory strings also.