I think I'm going crazy. I've tried to order a 20" bar for the aforementioned 465 Rancher from 2 different places (Baileys online and the local saw shop). Both bars don't fit my saw. The distance between the centerline and where the tensioner mates is different. The stamping on the bar that matches my saw says RSN A while the others say RSN B. Is that the difference? Anyone know where I can get one? On the picture, my bar is the bottom one.