I was in the process of trying to drop my needle on my stock 400ex carb and once i got into the carb and tried to remove those 2 little screws down inside that holds the needle assembly.. the screws striped out.. i guess i had the wrong screw driver or they were too tight from the factory.. I know i will probably have to drill them out or guys what can i do.. i hope i have not messed up too bad..