aandabooks
Addicted to ArboristSite
Put the bottom of the tip of the bar on something firm when you are tightening your chain. Apply some pressure and bring tension to the point where the chain is in contact with the entire bottom length of the bar. Now tighten the bar nuts. The bar won't tighten when revved. Maybe without the pressure and tight bar nuts. A loose chain will cause you to cut in a circle (as will a dull chain). Also a good way to mess up the drivers. As I think you metioned in an earlier post.