Hey!! I just had the same problem, was feeling pretty stupid! You've prob already figured it out but just incase any one else is looking for an answer...
When you look into where you're supposed to load the paper there is a grey thing about halfway over. This is the guide. It doesnt tell you properly in the instructions you need to move it but you do. It doesnt slide very easily.. thats why I thought it was just a part of the printer. But if you push it back it'll slide easier. Anyways move this all the way to the left, load your paper then bring it back to the right as close to the paper as you can
I have replaced the Epson ink cartridges for SX515W all work except the black ink, despite multiple...
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I have replaced the Epson ink cartridges for SX515W all work except the black ink, despite multiple head cleaning and nozzle checks. The printer is 2 months old and the ink is all new replacements.