I've been browsing through the forums for a while and thought it be a good time to sign up. I'm the new owner of a '77 CB550 K. I've always liked old bikes but I've never owned one until now. When I came across someone selling this dope Honda nearby I jumped on the sale. The previous owner informed me of a spongy front brake and charging issue. I was able to rebuild the master cylinder, clean up the brake caliper with a new piston, and upgrade to SS brake lines and now it works flawlessly. I'm still trying to address the charging issue. Electrics isn't really my forte. Hopefully this forum will steer me in the right direction.