I did the mod and it is awesome! 
I got the double nova drone and  - on all threes osc of the right nova - i soldered a long patchcable to the upper right leg of each TL072. So i can patch the LFO to each mod in or input on the adventure board. 
The nova drone won incredibly more sounds - i get great new bass drones with strong hi-cut. This build an amazing low frequency foundation for left nova that does more higher drones and melodies.