What you say rings very true! I had to stare at the space for quite a while before I finally put saw to wood. I’ve deviated from the plans in that it’s not entirely 2×4 construction. Some of it is more conventional cabinetry. But those dimensions were throwing me off. The 2×4 uprights (part #18) are 32″ long/high. Part #34, the main section countertop, sets directly on top of the uprights and the cross braces. This countertop is 3/4 inches thick. Best I can tell, that’s the last piece for that surface, so you only get 32 3/4″ height on the back counter, according to the plans.
How tall is your bar surface? If your back counter is a normal 36″, did you raise the bar surface at all? If I raised the back counter to 36″ and kept the bar at 42″, that doesn’t give a lot of room for storage or work area under the bar, and the plans make it look like there’s a lot of space in there. Does your bar overhang the back counter?
BTW, thanks for the reply and the advice!!!