I have a KA commercial mixer. the lever That raises and lowers the bowl does not work. I have taken the pedestal apart and I can see that part number 6 the lift arm is broken. I can see how to replace it, but in order to do that I have to remove part 13 roll pin, which is no longer available, so I have to be careful when I remove it. The problem is I don't see how to remove it from the handle bowl lift.