I had a china conversion a while. Got rid of it quickly due to said audio issues and reverted back to original PCB. I had fluffys pcb's a while but was too lazy to solder them up. The PGM cart system is just not for me.
Shouldn't be a difference. It's the same hardware as the Cave PCB versions, same caps etc?
But I agree that it feels...worse. I had an issue on a PGM convert Espgaluda where "Presented by cave" was extremely scratchy but the rest of it seemed ok.
I always get drawn in by cheaper solutions but...
I'm happy things worked out. Hopefully Japan opens up this year and will make sure to pay you a visit when time comes.
Right, there was some weird sync issue for you. I only ever played it in my Pony 3, so can't unfortunately tell you if Astros and Blasts had any issues.
Take care man.