Jet Pro Soft strech for whites color run

Hi All, I have been using JetPro Soft Stretch now daily for the past couple of months, I love the stuff, great vivid colours and little light touch but I have a major concern that quite often my T-shirts when washed the transferred prints colors run, I press the design at 190 degrees for 30 seconds as recommended then stretch afterwards to make the touch feel lighter as the paper work advises.

I am using a high end epson printer on text and image settings with good quality inks from a company called ProJet (Know association with Jet Pro Softstrech just similar names) I have used epson original inks in the past and the same thing happened, I have done loads of testing with this paper using differnent pressing times and length between washes but still this continues and it appears to be at random but I always wash the garment after 24 hrs and inside out.

I understand that the paper is intended for tight weave garments however it does not mention how tight, up until now I have been using fruit of the loom medium weight which is 165gm but am going to start using Gildan G2000 Premium weight 205gm to see if this solves the problem, has anyone else had this same problem using this paper? or got any advice to give? it would be greatly appreciated,

Cheers,

Ceri.