Smaller front sprocket for the S6S motor?

I want the option of running lower gearing for my bike. I run an S6S motor with a moped rear hub. The moped hubs are great for the Morini (proper offset, nice drum brake) but the sprocket options are limited for the offset I need and 45T represents the largest option for my brand hub.

To gear my ride down, I either need a bigger rear sprocket or a smaller front. Anybody know where to find a 9 tooth front sprocket? You can find 9 tooth sprockets for a 50cc KTM motor, but the shaft is not splined so they're not interchangeable with the S6S.

Anyone been down this path?

Digging up an old post here.... we never did find the smaller sprockets when we were looking for them, figures you can find them now.

Pat ended up designing a custom sprocket carrier that allows us to run cool two piece rear sprockets on our hubs. We can now get custom rear sprockets in nearly any size. And because the sprockets are two piece, you don't even have to take off the rear wheel to make a gearing change.