I am trying to lower the ceiling in two rooms.  All walls in home are 120" and I want ceiling in entry and kitchen to be 109".  I have read everything I could find and as close as I can get is using shelf ceiling and using soffit for ceiling.  Almost works but gives me a gap between two ceiling heights.  Any suggestions?  
	I tried shelf ceiling but you get a gap between old ceiling and new, I tried just lowering the ceiling but that lowers the roof.  If I change roof back it raises the floor.   Any suggestions?