Since folks seem to be reading this, if not replying, I will add one more bit to the story: This afternoon I made a nice print on Wm Turner 310 gsm paper, much thicker than what seems to be spec for the i9900. I am not sure what's going on: I had tried these papers before and got printer error messages concerning thickness of media. Either the error messages were sent in error or the profiles are adjusting the paper path. Even so, I thought the spec indicated the maximal thickness of paper through the path, but that's not so.
Would welcome hearing others' experiences with--what's the polite term?--specialty papers and this printer.
Best wishes,
Ed