I have renewed the carburetor on the 50’s Sanyang Flash scooter. There is now an Arreche carburetor installed. It runs well and is also well tuned. I only have one problem when the scooter stands for 3 days it no longer starts. The petrol hose (transparent) is empty and it does not manage to pump the gasoline down into the carburetor. It comes very slowly out of the tank and it only runs up to half of the hose approximately after minutes. Then at some point the battery is empty . What could this be about ? Is there possibly still the auxiliary nozzle too small ? Hose poorly laid ? If you fill the carburetor with a syringe completely on it runs again 1A until it stands again 2-3 days. Does anyone have an idea ?