I'm undertaking the Royer Mod project with a MXL 2001 and as a way of organizing my plan of attack I thought I'd start with building the power supply.
I redrew the schematic in Scheme-It to make it easier to read.

For laying out a PC board I wanted to try and match the original board's compact layout. To that end I came up with this visualization;

It's an enlargement of the PCB photo from Royer's original article overlaid with what I think are the proper positions of the circuit's components.
The thick darker brown area is unetched copper on the reverse side of the board. It serves as a common ground. I doubt the original used through-hole-plating; maybe short jumper wires or component leads were used to connect layers.
My plan is to use perf-board for my version with approximately the same layout and wire the underside point-to-point.
Hope this helps those who approach the project in the future.
I redrew the schematic in Scheme-It to make it easier to read.

For laying out a PC board I wanted to try and match the original board's compact layout. To that end I came up with this visualization;

It's an enlargement of the PCB photo from Royer's original article overlaid with what I think are the proper positions of the circuit's components.
The thick darker brown area is unetched copper on the reverse side of the board. It serves as a common ground. I doubt the original used through-hole-plating; maybe short jumper wires or component leads were used to connect layers.
My plan is to use perf-board for my version with approximately the same layout and wire the underside point-to-point.
Hope this helps those who approach the project in the future.