RE: RClander T33 for 90 or 120mm edf
Yes, HK has 8mm adapters but they are designed for 8.5mm rotor holes. The Lander adapter on the 120mm DF has a longer 9.5mm diameter shaft area which is one of the reasons it spins so smooth and vibration-free. Add an 8mm motor shaft to it and you have even better dampening for a slightly unbalanced rotor.
I expect this new Turnigy SK3 Fandrive motor to work well on the Lander 120mm DF. If so, maybe we can get Park RC Models to sell the 120mm DF unit without the motor mount plate for $10 less.