The quality of the build on the KD2P is excellent. I noticed that when I had it apart, that every square inch of the thing is porcelain glass over steel - even the underside and sides of the tub and inside of the cabinet panels. It is clearly built to last. Well, not the pot metal hinges - be careful - the ones on mine were broken (at the point where the springs attach), probably from the lid flying open once too often. So I made new hinges out of billet stainless steel.
I don't use the KD2P as much as I would like, mainly because its in a second kitchen on an enclosed patio. I don't generate too many dishes out there, so the workhorse is the Bosch SHU43C in the main kitchen. Occasionally when I have too many dishes to load into the Bosch I'll run the extra stuff in the KD, partly to keep the drain valve in action.
I was wondering if you could do me a favor, and take a few closeup shots of the soap dispenser. Most helpful would be shots from three angles: top, front side, right side. From that - along with inch measurements for the three dimensions length height width, and I could probably fabricate a replacement.
You'll also notice that the machine runs a lot quieter when the racks are installed, and even more when it's got a full load of dishes. The unimpeded spray from that wash arm will otherwise cause a deep drumming on the underside of the lid.