Hello all I just recently bought a old Farmboy ( 440B) with a blown Kohler 18hp Magnum and replaced that engine with a newer 25hp Kohler Command OHV. I ran her for the first time yesterday, bucket and boom work fine but man can she buck when trying to roll ( I almost registered here as "Whiplash"), from what I've read that problem might be from low rpm's being I don't have the throttle hooked up yet so I had engine speed set low. From what I can tell from all the varnish that I got out of the gas tank is that this girl has set for several years without use so my next thing to do is change out hyd fluids and filter., I do have manual coming this week but as far as type of fluid I'm thinking AW32?? Does anyone know the aftermarket part # for the ( spin on) hyd filter?? Thanks in advance for any help/input