Not sure if this mod has been mentioned here, but I've been thinking about it for a while. I got tired of the rubber band rolling off my LB in my pocket and also having to keep track of it. So I added a very small brass pin, filed and polished it, drilled the wood base in the MFLB for it, tapped it in, and then marked a corresponding spot on the cover and counter-drilled a shallow hole on the underside of it.
I think one small modification to this mod will be that I'll file/sand/polish a very small ramp on the underside of the cover right next to the small recess that I drilled. This will give me a little gap to make it easier to lift the edge of the top just enough to clear the brass pin when I want to open it. As it is now, I just pull up on the cover very slightly by grabbing the opposite edges and pulling upward, but sometimes it's hard to get a grip on it.
My only concern is that over time, the force of the curved wire that creates the downward force on the cover will gradually lose its spring / force. I only have to lift the cover approx 1/32", but won't know if it creates a problem until I've open-closed-toked many times!