Thanks Dave.
I was going to ask about the nozzel but when I went on line to look for that parts list I came across an old posting from you in 2016. Feb. Has this problem started again or did the seals that John got not work ?
John .
The seals that John kindly got for me were for the air cap. They're not shown on the exploded diagram because H&S don't provide them for their Ultra model! I can't see how the A/B is supposed to work if there's not a proper seal between the air cap and the main body.