Hi joes78, and a warm welcome to the forum. grin
It's great to have you on board.We all like to learn new things and tinker here. wink
Thank you for posting this info for us, I for one, have never seen a complete mower in the sharpening machine.....I do agree that a lot of the accuracy of the grind would depend on the serviceability of the cylinder reel's bearings...and frame alignment, for that matter.
Once again Joe, :welcome:
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin