No washer behind kickstart idler gear?

'78WR I'm working on appears to have had a washer between the case and the kstart idler gear, but there was none on my '77CR, which had the same set up. Parts diagram shows no washer either, but wouldn't that gear wear the magnesium case without a washer in between?

That gear rides on the kick start shaft. I don't think there is any pressure keeping it against the case. The gear oil should keep it lubed so not to wear the case. Does the wear mark on the gear match the case?

No washer or shim in that position.

Thanks to both responders. Gear and case are fine. Now that I think about it, there is only a moment of pressure on that gear when you depress kstart and the spring loaded ratchet gear engages the idler gear.