helmet

hello New member. I have already learned so much from reading all your posts. I am excited to work on my 74 Honda cl360. So far I have had my tank done and worked on making an old police helmet into a retro one. Next step is to replace and refit headlight and make my seat more comfy.

Anyone have luck taking apart a helmet lock with out mangling it? I have a 1972 SL100 K2 with a helmet lock w/ key and a broken lid for the lock cylinder. Figured I could replace the twisting lid with a donor. Bought a eBay lock and can't figure out how to take it apart without pure...