Well, the MGN12H linear rail carriages fit into the new carriage adaptors I quickly knocked up in Tinkercad perfectly!
And, don’t they look lovely in Purple (great filament from 3D Filaprint)
Now, to dismantle the printer and see if the print bed tray fits…………
That’s the problem with printing stuff to upgrade a printer, iterating takes time and stuff gets dismantled waaay too much! I need a second printer :-p