Which colour nozzle did you use for the gun?
Despite purchasing the new foam gun I then found that 1/4 quick connector as supplied would not push fully into the female end of the stubby gun. After much swearing and cursing I managed to remove the connector from the new foam gun, wasn't impossible to do this time, and replace it with the one supplied with the stubby gun.
Now to try it out, when it eventually stops raining that is..
I did wonder, as was at WaxStock the other week and almost bought a new foam gun, but wasn’t convinced the 1/4 adapter was the same. Good work moving it over