I have one exactly fitting your requirements-made 2 months prior to yours, 197 cc, fully disassembled, and cleaned up. Was about to start rebuilding it when I saw your post.
Are you still in need of your original request.
I live in Sydney, but we can post if we really need to.
Kirk ( 2stroker)
It’s all in mint condition, just had low compression, so I ordered new rings. When I got the piston out, it looked fine-rings looked perfect, so I think valve sealing is the issue.
Let me know.