Hello, it got stronger in winter. Starter: goes after longer turns, but only if I don’t give a gas. If it runs, it chokes off gas. But if it runs a bit, it spins well through with the gas. Probably it shouldn’t be the air-empty replication screw, right? But how do you narrow it down. Ev, false nozzle, nozzle needle insertion and false nozzle needle come into question. Only how do you do it best without expanding the carburettor a thousand times? How do you do it?