We have had my son's Vento 100 for four years now and never had a problem until our last trip out. It starts up and idles fine, my son can ride the bike around for 5-10 minutes just fine, but after that if he tries to accelerate the bike bogs down and stalls. The bike starts right back up and still idles fine but as long as the bike is warmed up it stalls when you try to accelerate. I cleaned the carb and replaced the plug, and now the bike starts much easier then before, but we still have the same stalling issue. I am still using the self mixer on the bike. Any recommendations on what to try next? I was thinking about mixing my own fuel and seeing if that helps.

Thanks