I have not been able to find a replacement engine (GXV390) for my Honda Harmony 2013 riding mower. The repair shop said this engine is no longer available. They claim it threw a rod. They did not disassemble it. They only looked at it without removing it. Does anyone have any suggestions where I could find a replacement engine (perhaps rebuilt) because of cost? I hate to send my mower to the scrap yard as it has many new parts. Would there be a kit available to rebuild it? Thanks.