The action is redesigned by the shop owner Mr. Jude Reveley. The key height is increased to 66mm from about 64mm while the fallboard still fits above keys under stretcher. Somehow after first pass of key leveling, they are pivoting sluggishly on balance pins. But balance holes were loose enough before the top stack is on. The problem is that, with the increased key height, the balance pins are leaning too much forward in balance holes, binding the holes as well. By tapping them back, the keys are eased.