Well not know how bad you stuffed it or if the crashed filled the carb with dirt or any of it but when you advance the throttle and it gets rough or quits would lead me to lean out the low end to check it. One way to double check your low end is if you can get it to idle, either remove or pinch off the fuel line while its running.(be careful) If the rpm increases before the engine quits, your low end is to rich. If the rpms just go down and the engine dies-too lean.