There was a thread a few months ago on this topic. It also talked about rails coming lose.

As where to buy a rail im not sure.

As to the installation it was a matter of drilling the holes into the spot where you want the rail. They do a contortionist move to get the bolts up there and tighten it down. Might want to add some bracing from metal or that back wood/fiber board stuff they make the engine to ballast area covers out of. I cant think of that material.

Heres that Thread i mentioned.

https://forum.moomba.com/showthread....ight=hand+rail