Update on the resonance issues. David sent me replacement driver modules which I was initially very skeptical about however they have totally eliminated the problem. Ive run a profile which, prior to the change, was causing terrible vibration and noise but now runs totally smoothly. I can barely even hear the motors now.

I must say a huge thanks to Dean who was very supportive. He chatted with me over the phone and gave some excellent advice. I think Deans machines look of a very high spec and he obviously knows what he's talking about and as much as I would love to own one of his builds they are unfortunately a little beyond my budget at the moment.

A few have told me to send this cnc back but so far David has been very supportive and since my original complaint has been suitably resolved I don't have a valid reason to return it - nor would I want to. He has done an honest days job and I have what I paid for.