I'm sorry I'm new to this I probably sent you two of them but here it goes again can it be a maladjusted locking stems I wish I could see them to see if they are sitting where are supposed to and if it is a problem how do you adjust them I don't see a way that they can be but that I don't know the only adjustment but I seen his on the limit switch that's on a tunnel cover it has about a 3/8 throw and the screw for adjustment is painted