Well, you can send it to me and I'll see if it does a better job than the one I bought from Sid Harvey years ago, maybe Delvan got it right.
Changing the nozzle on a FRH burner ain't much different from changing the nozzle on any gun burner, there's just so much less room between the FRH diverter and the blast tube to make it fun. Most people pull the blast tube out the back of the gun assembly and use 2 OE or hex wrenches, because it works. Some burners are just so much fun getting the blast tube out of and back into wrenches go flying. I have no idea how that happens.
The best example I can think of would be a sparkplug threaded into a plug extender inside of a small vacuum cleaner tube.
Ideally this device is 2 coaxial sockets, one holds the adapter the nozzle screws into and the second indexes the nozzle and loosens or tightens it. The problem has always been either the trained ape at the burner factory or his gorilla cousin who last serviced the burner overtorqued the nozzle. That might not even be a problem, if the nozzle wrench had sufficiently long handles.
