Hi together my scooter stood from summer to now and now he doesn’t want to run. What can be the cause of it doesn’t have much of scooter. I took out the spark plug and it’s very little wet. Tank is also full of battery I had jammed down thinking there’s also no problem. Can you help me or do I have to make it expensive again in a workshop It’s a 50s flex tech fun 4stroker has never had problems with it before.