Well this is what happens when you brag on a new piece of equipment I guess!! LOL I love the new John Deere 757 I added to the line up but had a weird thing happen today with it and it only has about 12 hours on it. The one thing that I was a little unsure about is what this issue happens to be. On the JD ZTR's the deck height adjustment is done by a turning of a knob to the desired height after of course using the lift assist to lift the deck into adjustment position. Well the knob has always been a tad tight to turn I felt, but today it would not turn at all and I mean we TRIED! Luckily it was set at 3" so I could use it. It does have a grease fitting on the bottom of an inset bolt that appears to control part of the turning that my grease gun would not reach without a flex hose (which I lost awhile back and dang it haven't replaced it yet so I can't add grease this evening to see if that helps) but I'm also not sure that alone is enough to cause this problem. Anybody have this happen or any suggestions on the cause/fix before I can call the dealer tomorrow. Thanks!