240 corn heads had a spring loaded snap roll,one side was able to open up but pushed back by 2 springs... springs are either broke,full of dirt,snap roll stuck-froze open or you need to weld a plate to back of rolls so stalks can't get into rollers at top of blade sets and open rolls. the rolls should be tight at top end at all times. also might have to speed up corn head to take stalks that we have today.stripper plates are also the most overlooked problem as previously