ink marks using new epson R3000

[rockne]

have had this printer for about 4 days.  been printing 4x6 image on 5x7 paper.  using canson infinity paper.  have printed about 20 different images with no problems.  all of a sudden i'm getting a few drops of black ink on one of the white margins (long edge).
 
have done the following:  ran nozzle check 3 times
                                       successfully printed text documents clearly.
                                       used epson matte paper once and it did not happen.
                                      epson tech support was pretty useless.
 
anyone experience this problem and if so how was it resolved.
thank you.

[redriverpaper]

Set your platen gap to Wide.  You'll likely seeing head strikes which result in ink blobs and streaks.  You can see a screen grab of the control here

[rockne]

thanks for responding redriverpaper.  my problem has been resolved.  after speaking with 2 rather inept epson tech support guys i finally got to a higher level technician.
the answer to my problem - the photo paper was curled which is why it was hitting one of the rollers.  totally new to printing so not something i would ever have picked up.  after flattening with some books it working perfectly.