QTR-Quadtone RIP

Epson R 220 and Epson R 340 - both with the K6 inkset, Windows XP
networked environment, QTR 2.5.2, CS3, paper is Inkpress rag warm tone
200, Printers will feed the Inkpress paper fine when printing through
the Epson driver - (one of my students did it by mistake) When
printing through QTR the Fine Art paper will not feed without coaxing
and takes several trys to even do that - bond paper feeds fine - the
printers have been set to "thick paper"  - I have tried both the Matte
paper and Ilford heavy weight media settings in QTR - with the same
results -- any advice will be appreciated  - Just a note to the
curious - when it does work - the prints are great