Hi Nigel,
The filter I am using with the adaptor is from a peugot I think? Coopers Z2177, I think most filters are pretty interchangable now??
If you have difficulty finding the adaptor let me know I can get them from an electrical factors near here
There was another post recently about the crank nut/ worm not fitting
A good cycle shop will have a 9/16 X20 LH tap for reclaiming pedal crank threads (same as worm/nut)
Hope you get some enjoyable miles?
I did a couple of hundred yesterday on my SR, Very enjoyable vintage run in west Cork, there were 4 other A10's there
Mines the nicest tho!!!
At last we are having some fine weather
Regards
John