I got a problem with my friends spyder victor. It drops balls out of the barrel when it is barrel down and it shoots more than one ball at once sometimes. A friend told me it was the ball stop and I should oil it or get a new one cuz the new version of the stop isnt that good. What causes it to shoot more than one? Is the ball stop causing this or could it be something else? It shoots to the left too but I dont want to tell the owner cuz Im playing against him.......jk. What could that be?