I have an AFM and POH but no PTM. Pm me if you are interested.
I have not operated them on the line but they are fine for what they are and you do not try to do to much with it. It is a short range jet where you do have to trade fuel for payload but that is no different to any other small jet. Many people will tell you that it struggles to make the service ceiling but it makes it just fine if you do your M&B accurately and keep within the mass limits. You will always need a battery trolley or GPU for start as the G1K sucks the power from the batteries, again many people will tell you that the batteries are poor but they are actually very good if you do not leave then on alone for more than a few seconds.
MM