Everything is normal except that bar. Its drooping in the middle pretty bad. My other one doesnt do that and it doesnt have the roller problem.Have you adjusted the Levers on each roller?
They are adjustable for thick substrates.
Thanks to jwlllpl I contacted wide image solutions. It was 147 for the part as they would have to dismantle a unit for it.If you find the part number or where to get one can you let us know, i need one of those exact same things also.