The label shows a manifold pressure of 16PSI. Regulated pressure from your TT is 11"WC (about 1/2 PSI). Sounds like there is a regulator in the stove somewhere and you'll need to change stoves or connection method. We have a high pressure stove and BBQ and just T hoses off the tanks before the regulator.
ETA - and it might be worth the effort to do as I suggested. As you mentioned, those burners are little jets. We call them "speed burners" and they will boil water in a flash (and burn food in a blink); had to look at your photo again to realise that. It is a skill to cook on them, but that is what we have on our Coleman Gladiator, and we love them now that we are used to them. It might be that they will not work on low pressure gas at all as they are quite different from the standard stove burner.
2011 Jayco X19H (purchased 2015)
2008 Jayco 1007 PUP (purchased new, traded for the X19)
2012 Chev Traverse LT with TP