First off, welcome to the Maslow forums! It’s great to see you joining us as we continue to develop this ingenious machine.
From my memory, the stock frame is 120" (3048mm) wide, 72" (1829mm) tall, and 18" (457mm) deep. If I’m wrong please someone correct me.
Without going into too much depth, the change to triangular kinematics (the math that drives the linkages or @bar’s ring setup) has significantly simplified the calibration process. I have had a decent amount of success with cuts made by the stock sled setup, but it does require more variables for calibration. The general consensus is that any of the triangular kinematic solutions greatly improves accuracy across the entire machine. There is still some debate as to which one does it best, and we are going into tests which should quantitatively prove that. Details in this thread
There is also a discussion about increasing the length of the machine, from 10 feet to as much as 15 feet in an effort to increase accuracy. There is a trade-off, however, as the longer the machine (and therefore the chain), the more sag there is in the chain and accuracy will degrade past a certain point. I’m sure we will be seeing tests over the next few months showing what that ideal length actually is. Details in this thread