trappermike
ArboristSite Guru
Being most people are right-handed or left-handed one side of the chain is easier to file than the other,so what happens both sides of the chain are not filed exactly the same,so one side pulls harder and wears it's bar rail out faster on that side,eventually making the saw cut crooked and bind. Just regrind the bar rails true again,and examine your old chain to see where you can file a little better to keep both sides the same.