I have been slowly going through our older home and trying to take care of the many issues. I just finished with the laundry room and have now moved upstairs to tackle the living room. I removed the old "popcorn" ceiling texture, sanded it smooth and primed it. I'm now prepping the walls. There is a "stress" crack on both sided of a header that transitions from our living room to the dining room. I removed a small piece of drywall to inspect and found that the header is actually no longer seated on one of the support studs, not sure exactly what caused this but in addition it has twisted with age and that has caused the cracks. I would like to completely remove this header and the top plates and have the ceiling transition between the two rooms without obstruction, just not sure how to structurally strengthen the trusses if I remove the header and top plates? Is this possible?