I guess I just don't see the point in it. I guess there are 2 different philosophies on bar length, some people run the shortest bars they can get away with...I prefer to run the longest bars that I can. My 066 runs a 36" most of the time. It's a ported beast of a saw, so it has no problem running that even in oak or Euc. Besides, I can stand up straight when I'm bucking and limbing the tree after falling it...it's already a nearly 20lb powerhead, I don't want to work harder by having to bend over to cut stuff.