Maybe I missed it, but I haven't seen or heard what the rods look like. I've dealt with enough oil issues in stock crank, high RPM 360s to find it hard to believe a main could get to that point without the rods coming out of it first.

6k is not a lot of RPM and it shouldn't take radical oil system mods to keep it happy. There are some basic things that would be helpful though. You can take it apart and fix it, but I'd want to know why that happened rather than just hope it doesn't happen again.

ETA...I'm with Porter67 in that I'm not sure what that statement means. But I'm curious.