Crofter
Addicted to ArboristSite
If the bar rails are worn by an out of kilter chain and you flip the bar it will wear the same pattern on the other side. At this point it will not matter which way you flip the bar, the chain will run off the same way. I am taking for granted, lol! that you are flipping it top to bottom and not end for end as in a double ender!
When people get in a quandary with trying to straighten out a chain and bar that are both wonky they often find that the saw will cut true on the upcut but run off on the down cut. I have seen some good arguments over that but we are complicating things more than necessary. Enough to know that uneven wear on either the bar or the chain can lead to run off and that unless you know the wear patterns to look for it is easy to be mislead about what is the primary cause. If you cure the root of the run off problem immediately it shows up you usually dont wind up with weird combinations of problems and compensating cures.
When people get in a quandary with trying to straighten out a chain and bar that are both wonky they often find that the saw will cut true on the upcut but run off on the down cut. I have seen some good arguments over that but we are complicating things more than necessary. Enough to know that uneven wear on either the bar or the chain can lead to run off and that unless you know the wear patterns to look for it is easy to be mislead about what is the primary cause. If you cure the root of the run off problem immediately it shows up you usually dont wind up with weird combinations of problems and compensating cures.