It's the same thing that happened to me a few years ago.
I called the head mech. here in Buffalo NY & he knew what it was as soon as I told him the symptoms.
A small in-line fuel filter located just before the T to the carbs was plugged. Weird because it's not shown in our manual!
I blew it out w/gumout, replaced it & it never happened again.
In fact she ran like mad since.
I hope it's as simple for u as it was 4 me
Gary James
I have some images of it under my picture profiles.
