No prob.

Once you ride the bike many several miles, the chain WILL eventually quit stretching.

I went on a mad hunt for replacement chain and found that after awhile I didn't really need it, my chain(s) had finally quit stretching.

I did find a few source for chains, but you can use 415 chain D.I.D makes it and so do several others, set you own level of expence.

Most places that sell/service mopeds should have some on hand.