Shelby Block Rear Main Seal Leak

[A98Coupe]

I have a new Shelby 468 and after only 18 miles running, it is leaking a fair amount of oil at the rear main cap.

The oil appears to be leaking at the oil pan gasket exactly where the gasket passes over the main cap / block joint on both sides. I'm using an Aviad oil pan + windage tray.

I've found some threads on CC and also FE forum explaining problems with early Shelby blocks leaking due to insufficient drain hole size in the rear main cap and explanation how to modify the main cap & oil pan to solve the problem. However, the photos seem to have been removed from the threads so I can't see the before & after countermeasures.

Can anyone help with the following:
1) Pictures of how the Shelby rear main bearing cap oil leak it countermeasured
2) Has anyone tried to remove an Aviad oil pan from an FE mounted in a Kirkham? Can it be done?

Oh, before anyone chimes in with the leak is probably coming from somewhere else an find it's way to the rear.......It isn't. I've checked ALL the usual FE leak spots and then some. The motor is dry except for the rear main seal area.

Many thanks
Stuart