Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
We just add nylobond to Wilflex Performance ink. Cure peaks at 290˚F. We add the nylobond always for printing nylon (and charge for it) just because I find it very hard to know if there is waterproofing or other coating present on nylon fabric and it seems like there is more often than not.
See we never get the classic athletic nylon mesh stuff, it's always pu coated dry bags and patagonia jackets that are so thin they can be stuffed in your back pocket, etc., more outdoorsy stuff than athletic. Yep, you need to toss ink after with nylobond which means you need to charge for it. As far as stretch and suppleness, maybe try adding a little less? We add about 10% by weight and it always feels great. But nothing beats an ink made for a specific substrate, I'm sure the one stroke will be excellent.