Digital BW, The Print

It seems like my whole printing world is collapsing, what with "upgrading" to Leopard (which 
I felt forced to do as so many new applications were not being supported in Panther) and just 
now being told by an Epson tech person that I should just go back to Panther becuase there 
will never be a new driver released for the 2200 (despite the outcry)....and now this:

I'm trying to print on Moab Entrada double sided 4x6 paper for some promo cards, and the 
printer won't release the paper properly, but keeps going, thus I get double images on the 
edges. The Epson tech simply said I can't use double sided paper...period.

Does anyone else here print on double sided matte paper with an Epson, and if so, which 
ones work?

Between this and the Leopard/Epson 2200 driver issue I'm completely stymied.

Thanks,
Sarah