Thanks Max for your detailed explanation and advice.
I haven’t attempted to adjust the governor for the high revving issue as I was thinking of resolving the idling issue first.
With your advice, I’ll try to look at adjusting the governor and see how it goes.
As you’ve indicated, I also suspected the intermediate circuit to be partially blocked (fuel path in the yellow cloud in attached photo). The other path (greenish arrows) is flowing freely in both direction when I sprayed carby cleaner from both ends. The path in the yellow cloud may not get sufficient clearance… I might pull the carby to try clean this path.
I’m considering the new carby option but wanted to exhaust all options before I proceed with that. Getting help from this forum is a step further and I’m glad I’m receiving the prompt response & help from you already.
Thanks for your advice. Will update status after I check / adjust the governor.
