I am replacing the spool and sleeve on top of the Hydrostatic pump on an 853. It is one of the two spools that controls the bucket, speed and steering. The spool has a bracket on top and the joystick cable attaches to it. When looking down on the top of the original spool it has two indentation marks on the top going halfway across the spool to show you the correct position for install. When installed the indentations would be positioned so they are going across the machine. When looking down on the top of the replacement spool (part 6666211) it has only one indentation mark along the outer edge of the spool and would be positioned so the indentation is lined up going with the front to back of machine. I cant figure out if the new spool indentation mark should be facing toward the outside of the machine or be facing toward the inside of the machine. Thank you,Greg