Hello I have a ys 4500 md# 917.276620. I just bought it used but in great shape and runs good. I was trying to find some info on this model and was directed here. So with that said does anybody have any pros or cons on this mower? It has a 21 hp kohler twin cam motor 42 in deck. And is there a way to adjust the deck? when it's set on the highest setting (6) it cuts about 3" high set on 1 and it scalps the grass. Thanks for any help and info