I have an 48" exmark metro. There aren't any grease fittings on the spindles. The manual says that they are these new bearings or something that are pre-greased with some special grease and do not need to be greased at all. I feel skeptical about this and read a thread on here about somehow drilling into the spindle and applying your own grease fittings. Would you recommend doing this and if anyone has done this what is the proper way to do it? Thanks.