2nd ribs on LBGE

Ok, my first attempt on Thursday just whet my appetite to do better, so I'm giving it another go today. Bought another rack of spare ribs at Kroger, but cut it STL style this time. This is not the best rack of ribs-fattier than the previous one, and the thin bones get very thin, long and curvy, so it's a little funky. But I went STL style this time to see if they cook more evenly, and decided to go 3-2-1 to test tenderness. So far 3 hrs in, just foiled and back on temp holding pretty steady @250-260. I also rubbed the spare rib tips and put them on, but not foiling-will pull after 4 hrs and check it out. So far, I've maintained a lower temp, rubbed the whole thing rather than leaving a couple clean (for daughter who hates black pepper-she can deal with it this time), added more rub, added a couple hickory chunks instead of chips, and also split my lighter cubes in half and lit the fire in two spots to hopefully get more even burn inside and more smoke. Wife and daughter just drooled over the smell at 3 hrs! Bones not twisting yet, but color is pretty good-still think I could get it darker with more smoke into it. Are the spare rib tips supposed to have small bone extensions in it or did I not trim correctly? They're curvy and look funky to me.