I have a morley wah, but haven't use it in years. when I first got it, it was weak. The curtain wasn't making complete contact with the reflector, so I use some masking tape to change the angle of the reflector edge. I know I changed the lamp, I may have put a brighter bulb in. That lamp kept going bad, I wanted to put in an LED, but still haven't got to it. I'm curious about the motor mechanism, more so about the can that vibrates. Years ago I saw a vibrato pedal that had a glass jar. The fluid had dried, but Dish detergent has the proper viscosity to slop around on that transducer. Those can vibratos contain PCB oil- nasty stuff, toxic.