Yes it is different. The 44" stb. hose goes into the wall behind the toilet and disappears into the abyss toward the galley. I found pictures of a gutted hull and the hose does a U-turn under the floor under the stove headed toward the bow then does a 90 degree turn through the stringer and another 90 degree toward the holding tank. What the hell were they thinking? I have no clue where to start. I will wait until next winter and come up with a plan. I used everything under the sun from muriatic acid to drain cleaning chemicals. Unblocked for now!! Thank you for taking the time to reach out to me.