Had a weird incident this past race where i broke the layshaft in half and also destroyed 3 teeth on 2nd gear. I didnt do anything different, tried to shift from 2nd to 3rd but the car got stuck in 2nd and wouldnt shift into any gear. Pulled the car in and removed the back cover to see that i was selected in 2 gears. Popped them out, loaded the car up and went home. Upon removing the gear set i have found the layshaft to be broken right where 2nd gear is and 3 teeth on the big 2nd gear are gone. What would cause this and what can i do now that i have the gearset out to ensure it doesnt happen again? What parts do i need to service while i have this stuff out?