I used my '49 8N yesterday to bush hog about 5 acres. No problems. As I was putting it away, the PTO seemed to lock up temporarily several times. After disconnecting the bush hog, I can turn both by hand. I suspect I might have a bearing failure on the PTO shaft. Removal appears to be straight forward, but my shop manual says the bearing inner race will have to be removed destructively and the new one heated to get it on. Does anyone have experience with this? How did you remove the bearing inner race, and does this apply to both bearings? Thank you in advance for any comments or suggestions.