bought a sd stinger motorized bike about 6 months ago. been running great unill yesterday. the bike was running rich so i leaned out the jet needle one notch. after i completed that i went to fire it up. when it started the bike was stuck at WOT. so after turning the bike off, i changed the needle settings back to the original postition. after doing this the bike wouldnt start at all. i went to check the spark plug and i found i had no spark. so i bought a new plug and still no spark. does anyone know how to solve my problem. it would be greatly appreciated thanks.