Digital BW, The Print

I had this problem too. You really get to dread that sound it makes 
when it tries again and again to grasp the paper. In my case it 
finally caused me to take my printer in to be "refurbished". I 
brought it home, plugged it in and it worked perfect again. (And it 
was shiny and clean and even smelled good. It was like a whole new 
printer.) After about six or seven 11x17 prints on 308 GSM HPR, the 
exact same paper feed issues started up again. After the problem 
starts, no matte type paper I try will consistently feed properly. 
In my case this is HPR and EEM. It will work once in a while, maybe 
even three or four times in a row, but the problem keeps occurring. 

On the other hand gloss and luster papers have no problem. After 
using gloss and luster papers for a while, I try some matte paper – 
works fine again. I'm convinced that the problem occurred because 
running HPR through the top feed leaves behind a good deal of 
unbound dust. The dust coats the rollers and the rollers can no 
longer "grab" matte paper. I have no advice about cleaning the 
rollers, except to use non-matte paper for a series of prints, which 
seems to help clear gunk.