Hi Corno Dolce,
Your "dirty trick" was interesting ... I have once done something similar - a former church a long time ago had a 5 rk "wicked" pos ... 15 inches of wind ... horseshoe console, double touch, etc. Required monthly tunings, and when the tech died, I took over the maintenance and tuning, as nobody else would touch that organ with an eleven foot pole.
The spec was Diapason, Tibia (real hooty one), Salicional, Melodia, and a VH. I closed all the caps on the VH, then tuned them a couple cents sharp to the Salicional, a quasi-crap-cheap String celeste. The Salicional was quite bold in sound, almost equaling the Melodia, so the match was good. When used with the theatrical trems, the sound was almost ethereal ... maybe "eerie" would be a better term. :lol: