I just purchased my 02 yz 125 and when i have the clutch in and i pop it into first or any gear i have to keep it reved up or when it idles it trys to go and stalls but when its reved up it dosnt move at all. I have tried ajusting my clutch cable and it didnt help. Dose anyone know what could be going on? is my clutch done ? do i need to change the oil in the tranny ? thanks in advance for any help.