Hey George Des (guru of fuel pump rebuilds),
I wrote a paper of the procedures I used when I rebuilt, under your guidance, my old style fuel pump.
In it is listed the O-Ring sizes and bearing sizes. They were readily/cheaply available here in Australia.
Our measurement system here is generally metric but imperial sizes are still used in a lot of engineering manufacture.
As I didn't encounter any problems removing the pump end screws, I couldn't include the procedure of removing broken screws.
Lets collaborate and produce something our club members can access and/or modify.
Maybe it could include a explanation of the way the fluid seal works.
You have already typed that info into the PC and if you need a copy, I could email back to you your original emails.
Sorry to steal a moment of the topic but I expect George and I will continue this by email.
Bob Smith (Brisbane,Australia)
RHD,1967 early 250 SL, auto