Sounds like you see red craig on the track. One of our Marcos drivers always snaps his and couldnt work out why when all the other 8 drivers never had problems. We put a new gearnob on it with a bolt head on the top holdin it on( on his request) and sure enough it wore right threw his glove and his hand in a half hour race lol. He has actually even snapped the whole gearbox ally top cover completely in half once
. Animal!