The PTO bearing on my 149 had a catastrophic failure. So I'm heading out to NAPA to get a new $13 bearing RA100RR (1/2 price of MTD). I'll also rebuild the PTO with a bronze wear button and stainless steel thrust button. I've found the OEM thrust button rusts/pits and over time does gall the bronze wear button, so I figure to try the SS version. I'm thinking of putting Slip Plate on the new thrust button for added protection from wear. Has anyone tried this yet? BTW - I noticed that Slip Plate is now being sold at Ace Hardware as an aerosol known as MowerGuard (.com)