OK so I got a seal from these people.
http://www.a-vierling-shop.de/Tuermanschette-7643-Bestellnummer=190406=1259
Site is in German so took me a while to do it, paypal acepted so paying was easy.
£28 deliverd, took about 5 days to come, beter that some UK places.
Info plate.
Top off
Back off
Surprisingly clean for a 30 -35 year old machine.
The motor and variable pulley.
This assembly is driven by a cam on the drum shaft and drives the program knob round, not found on other automatics but can be found on some twin tub's
This little gizmo is what stops the machine spinning if the drum is out of balance.
Just look at the size and engineering of that water pump, puts today's crap to shame.
The drain hose is starting to crack up, not bad for its age though.
This was never going to be a full strip, so I just brushed out the dead spiders and fluff, and got to work with the 3 in 1 and a tub of grease. All done, switch on and...........

has someone given this thing an E or something, its gone crazy

It did a wash is 3 minutes and didn't even give the water time to get warm before it went into rinse :snivel: Top off, back off head scratch. Ahh sorted, as the belt pulley adjusts the motor also rises and falls on a spring loaded pivot, it was stuck in the high so fast position, a quick poke and hey presto. Its also much quieter, the program mechanism used to tick away like and old clock, not now.
Sorry had camera up the wrong way, I am blond after all :duh:
Will post video of motor and pulley moving later as I have developed a dribble

:'(