Thanks to everyone for the input.
275 for 2hr-45min-30min till done worked very well for my cook. Previously I had foiled well over 1.5 hrs and they were far too "fall of the bone" for my enjoyment. The Tiger Sauce really added a great flavor, I highly recommend foiling with this the next time...
New WSM 18'' owner here. About to cook my 3rd attempt at St. Louis spare ribs. Have had pretty good results so far. Going to try the Johnny Trigg method today w/rib tickler rub using brown sugar, honey, tiger sauce and parkay in the foil. Plan on cooking @ 275 for 2-45-45.
When it comes to...