Our CHIII went off without a hitch...
Loved moving that machine, so easy. Electronic clips at each head simplified it. the tolerances on that machine were impressive.
Also the reg forks never came off. Arms and heads come off, but reg system stays in place.
Running an auto reg every few weeks has led us to perfect reg from day one...
Based on my experience, I would buy used from an auction again. Best part about M&R is parts are easily available, you can fix anything on them, and their service is top notch. If you are handy with machines, you can get some great deals.
My 2C