I am looking for 2-3 rather old Unitrol 110 water heater control units for a propane water heater for some tests. The one I am trying to replace is approximately 20 years old and the mfr.(now Uni-Line/ Robert Shaw) no longer makes it precisely like the old one. If someone has any of these I will gladly purchase them. I can fax a photo of the one I have if any one needs it. thanks.