hello all,new to this so please bear with me,i have just bought a dt125r back from a motorcycle repair shop who could not solve my problem,which is that when i turn the ignition switch to the on position i loose the spark but when i turn it to the off position the spark returns but not that strong. i have had the ignition barrel checked and that is fine,could it be the regulator/rectifier,my partners son said that it was fine one moment but just died on him as he was going along.