Hi David,
Welcome to the Club, I have owned my Sebing S2 since 2000, it has not been fully restored and it was far from perfect when I bought it so has had lots of work required to keep it running over the years. It is regularly used on Club and other events although it is residing at McGraths at the moment for some engine work.
I would be happy to share my experience and provide any help I can. Roger is quite correct that there are many differences in the detail even between cars that are only a few chassis numbers apart, they were basically handmade after all and they seem to have adjusted details continuously.
You can email me directly at [email protected] and all of my contact details are in the front of Trident magazine.