Just picked up my new Super Duty 54" 25hp Kawasaki last night. Only had a few minutes to mess with it last night. First think I noticed is that when setting the deck height lower than 2.5 inches the deck won't drop all the way down on its own. You have to pull the deck leg assist bar back to get it to the proper height. Even then the drop tension on the deck at anything less than 2.5 is not there and the deck will move freely from 1.5 to 2.5 inches with very little resistance. I could not find anything in the manuals and wonder if this is an adjustment in the tension springs on either side that forces the deck down to the proper height?