Have a losi ten t stock engine. It ran great last season and a few times in winter. I cleaned it oiled it and set piston at bottom. Just took it out and tried to run it for the summer. It don't stay running. I have to keep throttle to keep it running and when I break it stalls. Changed glow plug. Tried minor adjustments tuning. Even set carb back to factory and still same. Need help! Also checked 1mm open on idle.