Hi All. So far,having failed to find the correct horn for my Pre-war BSA, I'm now attempting to fix the later HF1441 that I have as a temp installation however, it is missing the locknut for the tone disc, item 703106 which makes it awkward to adjust. So, does anyone have a spare or know when one can be found. All info much appreciated. Thanks Pete

Hi again. Another thought, if someone has a surplus outer dome nut, this could be cut down and re-purposed as a locknut. Thanks and fingers crossed

I have a spare.... email me your mobile number and Ill Whats app you a photo.....

email (option): mike-dodd@hotmail.com