Hi all! My Centurion Ri237 with a zr409 engine began to stall every time the accelerator was reset from slow to neutral. this often happens when mooring, or when selecting a rider. Usually after that it starts easily. Sometimes you have to twist for a long time to start, as it floods the spark plugs. No power loss or uneven operation is observed. Currently replaced spark plugs, high-voltage wires, throttle. Any thoughts on this topic are welcome, thanks in advance!