I bought my peugeot speedfight 2 50cc 2006, 2 months ago before I was 16 so because it was a good deal. I bought it of a friend who was riding it every day, sold it me for £300, i took it to my local garage to have it de-restricted, jet was changed in the carb and i had a new speedo cable put on as the old one did not work, but since i had it on the road for a day, i rode it for around 6 hours with breaks in between, i was heading home and the bike dropped from 45 to 30, stayed at 30 for about 5 mins then dropped to 20 and the engine started screaming really loud, when i got it home, i left it for 15 minutes, tried starting it again and it hasnt started since 2 days ago, asif the starter motor is trying to turn the engine over but it cant, could anyone help me please?