I have a Tora 318 Solo air, and have a question on the air piston. On the top of the piston is a retaining clip and under that a wavy washer. My wavy washer seems to be a bit less wavy than I would have thought. What I mean by that is the wavy washer doesn't always apply pressure between the retaing clip ans the top of the piston. There is a small amount of play between the piston head and the wavy washer. The service manual states, "Piston should compress slightly with spring resistance against wavy washer and retaining ring." But it doesn't mention anything about play between the two. Does anyone know if there is supposed to be some play in there? If not, I could bend the washer to remove the gap.