Hi man , you're lucky , i was playing with my old clavinet sim ( available on Rig ex) and I came to this rig in a few minutes , pretty close , it's available on rig ex as ' A.Parsons sirius sim '
I had to use a dirty trick : set your noise gate ( main pot not the FX ) on 7 to kill the sustain and get a very short attack.
I did set up the delay on the fly, be sure to unlock every FX slot since I use most of the slotrs for my rig.
I use a strat with mid position pick and reduced vol and tone.
Adjust to your taste , there is a small warble in the tone , but it should do it.