QTR-Quadtone RIP

Hi Guys...  New chum here so please forgive me if this has been asked before.  I have searched the forum but found nothing relating to this.

I am using an Epson R1800 with an ink-flow system.

I am trying to print on Epson Archival Matte A3+ paper.  I want to print borderless for maximum size print.  I can do this in the R1800 driver and through NX 2 and QImage Studio.  But I can't get the quality that QuadTone gives me, however, I can't get QuadTone to print borderless.

I have set paper size to custom at 13 inches X 19 inches and put a tick into the Fit box. which is set to 134% (although greyed out).

What am I doing wrong? 

Thanks

Edd