John Deere 567 feeding problems.

Started having problems with our 567 starting a bale. Seems like trying to start a bale the crop wants to hang up and roll back there for clogging the pick up up. So have to go way to slow to start a bale but once the bale is started I could go on. Crop conditions and windrows are good and never had the problem before. I did have a uper drive roll bearing fail about 75 bales into this problem occurring. (3hr run time) I replaced it today but I don't see that being the problem.
Thoughts?
Thanks.

John Deere 567 feeding problems.