Ok I just pumped my boat out which was swamped from last nights storm.
I looked in my junk and found new in the box still in plastic everything there and directions. Part number 1751-003 3.5 inch W.C. pressure regulator kit
"natural gas only" used on 7000 series gas valves. PM me yer address and I will mail it to ya. I will take it out the box and slip it in a envelope and put a couple stamps on it. It oughta get there ok. No charge "freebie" If you are wondering how I came about this part, I used to be a Robertshaw distributor before I retired.