Sam, I think we're talkin' about different bulkheads. I'm taking out the bulkhead that separates the head compartment from the starboard lazarette. I removed it to install a holding tank; my project is a hybrid of a couple of holding tank refits to 33's here on this forum - I have a stock tank, but it is a wedge shape tank (I had to remove the bulkhead because the tank won't fit through the lazarette hatch - I hadn't considered that 'til after I had ordered the tank!)