I was into my chainsaw dealer late last year and left the saw to have a new chain adjuster pin, bar and chain installed.
I remember they had trouble fitting the bar and they tried a couple before the mechanic found one to fit.
I didn't second guess them and have used the saw a few times since.
Tonight I'm looking at the chain and I see wear on the bottom of the links.
I check the bar and it fits the mounts and the pin adjuster well but it doesn't line up with the oil slot at the back.
I check the mount numbers on the bar and they're D009.
My saw takes a K095 bar.
It pays to know your equipment and double check it, I wish I had checked it sooner.