Can't put MMM adjustment knob into 'Top" position....

[dieselbob69]

"Top" position affords very little movement of deck downward. Where it sits now not able to go into top position, the deck drops quite a bit. I know I may be making a mountain out of a molehill, but it irritates the s**t outta me when something only has 60 hrs on it(about 8 hours idling trying to get bucket level, and this problem) and you gotta tinker with it to get stuff to work. I've only mowed my lawn 10x with this tractor so far(one other time was with a neighbors X740)...