I think you've tried Hart but not sure. My model number was identified on a site as an RV part - thought it was Repairclinic.com but maybe some other site. I received the parts last nite and the pilot safety valve looks like a ringer for my existing part, but the thermostat is different, which I knew from the photo. I'm hoping this will still work, though. The measurements are okay but the body is shaped a bit differently. Will try to install this weekend and maybe can move on from this oven thing.
Have you tried just taking your thermostat to a parts dealer and letting them try to find a compatible part?
Maybe I can learn something that can help you when I try to install this stuff this weekend.
"Where there's a will..." and all that.