When i have the throttle all the way down the moped feels like the brake is grabbing. Yet when it does it the engine doesnt lose any rpms but never goes any faster. Im confused i switched the coil the plug everything to the the ngk brand yet it still does it. I have a Tomos a-35 with a airasal kit 58 jet a tecnigas next pipe. Its weird i even changed the trans fluid just to think it was slipping at top speed but still does it. Do i have a bad connection somewhere or is the engine not ingadging. Im confused beyond belife can anyone plz help me i have a race coming up.