9 and 10 Jun 2020 - I went and purchased 2 new pigtails for the tanks.  Here is one connection point to the regulator. 

Another view of the regulator, the pigtail goes on the right side where the shiny brass hole is.

 This side of the regulator is where the line from the tank on the other side of the RV connects.  That line is 8 feet long, it had to be replaced also.  All rubber gas lines get stiff with age and they are all 7 years old.  Tomorrow I have to turn on the gas and check for leaks, the pipe thread sealant has to dry.