Digital BW, The Print

I have had problems with heavy Hahnemuhle paper feeding into my Epson 
1800 even after adjusting several settings to heavy paper.  I found 
that if I tape on a 1 or 2 inch piece of regular printing paper to the 
bottom of the heavy card stock, then I can get the printer to work.  Of 
course you need to factor this new dimension into your paper set up, 
5x7 now becomes 5x8 or 5x9.  

On the 1800, there are 2 places to adjust for paper thickness, one 
under maintence; check "thick paper", the other under paper 
selection "matt paper, heavy weight".

Hope this helps.