Round baler belts slipping

[Benson]

I recently bought a jd 467ss baler and have been baling damp corn fodder with. When I get a bale bigger than 4 ft I really have to slow down or the belts sometimes slip on the drive rolls and the bale stops turning, what would cause this?

 

[Chae1]

Try again in May.

 

[Orionn4444]

I recently bought a jd 467ss baler and have been baling damp corn fodder with. When I get a bale bigger than 4 ft I really have to slow down or the belts sometimes slip on the drive rolls and the bale stops turning, what would cause this?

What's the moisture like? I have to seriously watch when baling Silage with my case baler! Doable but just have to be careful