I knew it was a Deere when I read the title. Happened to my 535 10 years ago or so. Just like you said. Loud noise and find that. I had Deere fix it. Wanna say it was $6-7K back then. I still have the machine. Don’t use it unless needed. I released the pressure off the rolls. If mine broke again today, I’d try to sell it as a parts machine. Wouldn’t fix it. Hate to ask what it would cost today. Best of luck.