New to forum; new build; couple of questions

I'm in the process of my first build using a 4-stroke 49cc Hua Sheng engine fitted to a EZ Motorbike Q-Matic drive system. The pulley on the Q-Matic drive's centrifugal clutch accepts a #41 chain. I have a hub-mounted 56-tooth sprocket on my rear wheel, and that sprocket's teeth are smaller than those on the clutch. So the #41 chain can move somewhat from side-to-side on the big sprocket. (The 56-tooth rear sprocket is more similar in tooth size to the pedal-side sprockets on the bike.)

What are the implications of running the bike with this setup? Can I? Should I?

I'd greatly appreciate any help with this.

When I realized the differences in the sprockets this morning -- how the #41 chain fits like a glove on the Q-Matic's clutch sprocket, but shifts side-to-side on the 56-tooth -- I was a bit a concerned. I've had enough delays getting my bike ready, and I didn't want to be searching out and paying for (and installing) a new rear sprocket.

One more related query: I've read that with proper chain alignment, rolling the bike backwards and forwards should be pretty quiet as far as the drive train goes. I've taken a lot of time with the available adjustments, and I believe that my chain is aligned well between the clutch and the 56-tooth. But I do hear some mechanical noise from the drivetrain. But probably not any more than I used to hear when wheeling my 400cc Suzuki road bike with the engine killed. Nothing clunky or intermittent. This shouldn't be as quiet as my non-powered 1-speed cruiser bike, should it?

I guess I'm getting a bit anxious about all this because I anticipate firing up the Hua Sheng for the very first time this late afternoon, and hopefully taking a maiden voyage on this beautiful (72F) day in Mystic, CT.