I had a trip out on the 1937 Square today (for exercise, as its like riding a horse, riding a rigid Ariel because you have to take weight with your knees to avoid the bumps) and the bike is transformed after the carb modification suggested by Jens Beusse at the Annual Rally last year. So if you can get the Solex right it is a very good carb indeed.
36 4G, 37 VH, 54 KH(A), 75 Healey 1000/4, 52/53 ex ISDT KHA (project).
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.