Hi there. If you are still interested in anyone who owns a MK72 then let me add my input. I bought mine in the UK in 1978 and still play it every day. I guess I must have been lucky with the basic instrument construction although I have made some important changes to overcome the few weaknesses that remain. It was always a loud and strong instrument (and very heavy for an acoustic). It has some battle scars but has a very natural antique look to the top and binding (it has mellowed to a warm yellow on the top and to the binding.
It has needed some minor repairs over the years but they have enhanced the sound and life.
Repair 1 - added some superglue under the bridge as it was lifting slightly.
Repair 2 - added some superglue under the soundhole ring as it was loose.
Repair 3 - made a new nut from a 1/4 inch Tusq blank. This enhanced the sound beyond belief!!
Repair 4 - made a 1mm thick brass bridge plate as the string ballends were almost pulling through the original wood bridge plate. This gave another big boost to the sound.
I still use the original rosewood bridge pins
Fitted with light gauge Elixir 80/20 nanowebs this guitar rings and sings with great depth and sustain.
Many people have said a MK guitar does not sound like a Gibson. But then neither does a Taylor or a Martin and they seem to sell so that reason for condemning this model is invalid but many people do condemn it.
I play mine acoustically in folk clubs and it is praised.
I have fitted a KK Pure Mini pickup and play in a folk band and again it sounds great.
When they are good they are really good guitars