Need some help trying to locate replacement parts for some 30+ yr old recessed can lights. The only info I was able to get off the housing was Hi Tek Commercial Lighting Division, Vermillion OH. I have googled every configuration of this name and have come up empty. FWIW, these are 250W incandescent sloped ceiling fixtures, 12" diameter.I need to find some replacement thermal elements, they are somewhat unique in that they mount to the exterior of the wiring j-box and protrude out with the end setting against the outside of the metal lamp housing.Any "old timers" here who may have used these back in the day? Thanks very much for any help.