Question about yarn mast height

I got an email from Michelle and she asks:

. . .the latest post . . . mentioned that the yarn mast was too high. I watched again to see where the yarn mast was, and I never saw the mast. Mine is all the way up on both machines. How did you all know that it was too high, and where is it supposed to be???

I misspoke in that previous post (and have since corrected it). I had typed yarn mast when I meant yarn carrier. To be clear, the Yarn Stand is Item K on the AK machine sketch. I adjusted the Yarn Carrier (Item E).

I just played with the location of the yarn carrier until the machine seemed to be cranking better. A good reference as to proper yarn carrier height is to watch Jacquie's video.