Change RIB slider to fixed

[Dwt]

Does anyone know if you can change a RIB altair slider frame to a fixed frame?

 

[Matt-T68]

As far as I know the bed itself is designed to be fixed. It's the sled it rides in that give you the rail option. You'd probably need a fixing kit for underneath though

 

[Madpasty]

and there's me trying to find a way of putting my Adventure 1 bed on sliders.