Good on you for all your efforts to keep it going, that’s a lot of work just getting it to a usable state
The battle will continue when that athena cylinder arrives though. notorious mating surface issues, I eventually had my stock head cut for oring head gasket, remedied all leaking but took several methods before success.
The OE head gaskets are not cheap, the head gasket that comes with the athena put in the trash
I can wholeheartedly confirm the best DT is completely stock - wheelies and I topped out at 62 on mine when I had it - had a used YSR piston and rings and low comp too
Shout at me if there’s anything I can help with