Robertshaw unitrol problem solved
Well the nice thing about something broken, is you can't brake it more.
So what the heck, I took the control apart, it had lots of white aluminum corossion inside(10 years non use)
I polished the tapered spool valve with crocus cloth and it's matching body, which solved the leak around the gas cock valve(red knob)
The the temprature shutoff portion was also leaking, same problem, corossion under the seat so it was cleaned/polished also.
So all is well now with the water heater problem, lotsa nice hot water for dishes/shower
now on to other problems