When you get the bearing off,, you could take it to Applied Industrial over by South Puget sound CC. ,, they could measure it up and possibly hand you the correct one the same day... They might have to order it though.. Not sure if that is close to you,,, asked if you lived by the lake in your build thread , but you must have missed it.
Applied Industrial
2747 RW Johnson Blvd SW, Olympia, WA 98512