2 issues in the topic I experienced already.
1- the new safety valves inside tank valve don't always align with hose pin that suppose to push it.
On my BBQ darn thing would allow only for pilot light, but no big flame.
I ended up with removing the new hose with outer nut and put old one with inner plug, that works perfectly.
2-My propane generator would not start without starting fluid, but run perfectly after. It was the priming that was a problem and making topic here about it, I good couple of good advises. Not wanting to spend money on new regulator with prime button, I am carrying a piece of cardboard, that covers generator air inlet during cranking, giving it extra suction for fuel.
Problems solved for me and good luck to you.