Hi I just got a 97 kinetic tfr and I'm new to mopeds. Was running good for a bit but accelaration was very low. I read online to adjust idle screw ( one with spring) so I did and won't stay running unless throttle is open in which it is then rideable after warmin up a few min. Also , after being warmed up it sometimes dies when I apply the break. Does this mean I have to clean carb and if so doi have to drop the whole engine to get to it. And may the fuel mix have something to do with it?