Hmmmm interesting you say... When this problem first arose last week, I stumbled into the driveway of my transmission guys place, and he kindly "attended" to it for me... First he simply revved it up and adjusted the idleto see if that would clear it, but it didn't ..so then he revved it hard, whilst manually closing the choke flap to clear out any blockage, and cracked the primary metering block to drain out some fuel, I subsequently swapped out the filter too... But the problem is back. What would you recommend I do to clear out the circuit apart from tearing down the entire carb?