I picked up some aftermarket high lifts for my 252. What a difference! I ran doubles this spring, and it helped spread the grass, but packed the deck. This set of hi lifts spreads the grass, and leaves the deck pretty clean! No one seems to have a set of blades for the 252, so I just ordered 18" 5/8 hole hi lifts for a bobcat from www.mfgsupply.com. They also have a mulching setup for my Walkers 52 sd deck. These also work great, with less noise than singles if you can belive it. I bet if I run double hi's on the gravely it would fly.