I just purchased a Hustler Super Z with the XR-7 60" deck. My dealer said that the blade spindle bearings were sealed and did not require grease. But when I was under the deck to change the blades I see there are grease fittings on each spindle and the owners manual recommends that they should be greased. Any help on this would be appreciated. Also just wanted to thank Hustler for coming up with a fix so quick for the mower deck leaving a strip of grass on the left side.