Here's a shot of the gate with a small resistor (0.5 Ohm) in series. This to determine if there was perhaps some current moving from the circuit back through the Functions Generator. All looks as it should.
Kindest regards,
Rosemary
PS - I should have clarified this point. Channel 3 the gate and Channel 4 the shunt in series with the gate - both waveforms are superimposed - one on the other. I show both.
