i have a 74 cb550k, the speedometer was locked up so i lubed it up and used a small screwdriver to unlock it. but when i spun it the needle would not drop to 0 it would stay at 70. so i took the speedometer apart figuring it is ruined anyways. the spring is broken that is on the needle, it is rusted through i guess because this bike sat outside for 22 years lol. but i was wondering if there is anyother speedometers that will work? any advice would be great or if you have an extra one laying around and wat to sell it let me know(i did post in the parts wanted section)