125-200cc 02 cr 125 high revving can't find kick start lever

recently bought an 02 cr 125. was told it was bored out to a 144. ran like crap when we picked it up. bogged a lot at mid range. moved the needle adjustment down 2 notches. also main jet was almost completely clogged. runs a lot better now. was riding it today and the kick start lever flew off somewhere no where to be found. also i can't find them any where online. will any other bikes kickstart lever fit. or does anyone know where to get one. also it was idling at a good rpm. but now it idles way to high even throughout the gears. not sure where the idle adjustment screw is. pretty sure its the stock mikuni. but all the screws on the carb seem tight so not sure why its revving so high. all all the intakes seem tight.