Garnet T90PA - TRIPPER PA - Schematic

I'm looking for a schematic for a Garnet Tripper PA head. It's a four channel mixer with a 12AX7 and a 12AU7 and a pair of 6V6's. The model is T90PA. Each channel is wired to a separate volume pot and then summed prior to the first gain stage.

It's all point to point and I could draw one up but I don't know if anyone has been in here and what they've done.

Cheers