Suggestions for a Monochrome Laser Printer that handles 65 lbs cardstock

[Puu]

Hi All:

My imageclass 4880dw stopped pulling thecards out of the tray and I need to handfeed every single card now....

I make about 6000 greeting cards a year. 

Therefore I am looking for a new printer and wonder if someonehere  has any suggestions. Back feeders are preferred so nothing gets bend.

Thanks upfront

Puu