Thank you o_lampe. I will give that a whirl and report back!

The Sara Road Runner looks amazing! Well done!

I have a question how did you set up the RepRapFirmware for the serial SCARA with the road runner style gantry? I have a serial scara 3d printer running it off a Duet 3 Mini 5+ the M669 code was quite simple to set up, but I would also like to add a road runner gantry as you have done, how do I manipulate the M669 code for a set up like this? Many thanks, Marc