CarbaTec SA-406 16 Inch Thicknesser Instruction Manual?

[cranium_head]

Hi guys I have recently purchased a secondhand Carbatec SA-406 thicknesser. I have just started using it to dress up and re-use some old hardwood decking boards.
The rollers on the base of the unit seem to be held in place only by a small metal plug with a groove on each end of the roller. These plugs are vibrating their way out and on to the floor.

I was wondering if anyone knows were I can find an instruction manual for this tool. Any help would be greatly appreciated.

[BEKKY]

Our woodworking club had the same trouble with the grub screws in the infeed and outfeed rollers our Carbatec 20" thicknesser and we solved the trouble by screwing another plug on the top of each one as a locking screw.
Hope this is of some help.
Keith.