Ok Guys, I searched and have just a couple questions remaining. I've never run doubles and I'm not happy with the way my Gators are mulching leaves. I'm thinking of Highlifts over Gators. This is for my JD 737 54", 1st, would this be a good combination? I'm getting blowout with just the gators. 2nd, if I do this do i need to get a different set of Gators with a smaller center hole? JD uses big center holes. 5/8 blots. any help would be appreciated.