hi guys driving along today and hit a huge pot hole and the car jumped out of 3rd gear . i tried to put it back into gear but it wont go in loads of crunching going on . all the other gears r fine bar 3rd gear . i tried holding it in the gear but it just wont engage . if i am in 4th gear and gear down to third it will go in ok but when i put my foot on the throttle it jumps out again it only stayes in if i gear down to third . and dont give it any gas . any ideas what this could be cheers