@tdstead I've had the same problem with these and apparently just moving the a.limfront and a.limback attachment points fixed it. For example the new/edited positions I use are:
For the A-car: a.limback X: 0,000m Y: 4,644m Z: 0,479m
For the CUP: a.limfront X: 0,000m Y: -0,510m Z: 0,479m and...