Both printers are connected via USB. Always have been. The custom print size is 17" x 42".
I cut the paper to 39″ assuming a 1.5″ boarder on each end (as top and bottom could vary, depending on the image). Since the paper came off a roll & I knew that it would not feed well from the top (rear in Epson parlance), I attached a 3″ scrap cut from a 17″ wide paper in order for the paper feed into the printer. The custom size was then made to be 42″long x 17″wide. The print would begin printing exactly where I wanted it to begin, but as I stated, only the middle of the image would get printed. For example: the image is 14″ x 36″. It starts printing 4.5″ in (on the left hand side of the image) and continues to the end, leaving a 1.5 ” boarder on the right hand side (the full 36″ of the image). However, what is missing is ~4″ from the top & bottom of the image.