Evening Davy,
Was just having a hunt around and found this on another site:
http://www.vintage-radio.net/forum/showthread.php?t=29133
About halfway down someone mentioned repairing a speed selector...they suggest it may be seized up, although it didn't feel like that tonight.... might be of some use.
Also i had a look at my 1201 and the mechanical action appears to be the same...thats probably no help, but i'll keep an eye out for any more info.
Cheers
Will.