Replace the fuel tank with a primerless one.
Replace the carb only, and it wont have to do break in again.
If you want a pipe get the THS one only 49.99 direct replacement.
Check to see your engine head was not dammaged or bent. Also you chassis might be bent so everything will be tweaked to hell.

If you think your engine is too fast just reduce the amount that the carb can open to limit power, or even easier just run it rich.