Weird wear on 2135 mower deck drive pulley?

As part of the spring cleaning, I always lube the mower deck and sharpen the blades. This year, I noticed the dual pulley which takes the main drive and transfers it to the deck was loose. Closer examination showed the top ball bearing OD was .100" loose in the pulley housing. I've never seen a ball bearing get loose and wear the OD that much. I made a shim to take up the loose fit, but WIGO there?



jack vines