Wow..   100% baffled.... How can anyone like Haynes state the engine is complex. It could not be more basic.

👍👍👍old school motors are simple machines unlike the modern variable vale timing engines and stuff around these days.
Best go with Rob and watch a strip down of the motor the only awkward reassembly bits are the cam followers dropping out as you lower the top case on but a bit of grease will hold them in if you do not have the spring clips.

Wow..   100% baffled.... How can anyone like Haynes state the engine is complex. It could not be more basic.

They meant more complex to dismantle i think. Old Ford engines stayed on the engine stand.
Head off,  turn engine over, sump off, remove internals.
Can't do that on a beetle

Well Rob has checked it out and oil flowing nicely now. Only thing he found was a missing O ring on the oil pump.
Only bit I didn't send him was the external oil cooler so will run it for a while without and refit when I change out the flushing oil and see what happens

I just had similar on another motor - split o-ring on the intake side letting a tiny amount of air into the pump, stopped it building any pressure.