We have a lanyard solution that is much stronger than the ball chain. It is a free part and is available by calling or emailing This email address is being protected from spambots. You need JavaScript enabled to view it. and letting them know how many kits you need and what model of MM400 you have (MM400, MM400A or MM400B).
Click here for TechNote #1029 on Bead Chain/Lanyard Replacement