I got as a gift 20 years ago a 70's crybaby wah..I've ignored it for a year as I have a vox 847 that's just fine... I took it out of a box yesterday It looks like crap but has a switch on/off for bypassing the battery...maybe it has a true bypass switch not sure if true bypass switches were made in 70's 80's or early 90's when modded ?it's got no rubber feet so there's tape holding the bottom together and the spring action is gone. A year ago I put a fresh battery but at the time didn't look at the switch before re-taping closed. I put a binder clip wedged between top and bottom and a hair rubber band thingy around the pedal for spring action. The wah sounds great...but is there a spring I could get cheap ? It's noisy in action but not scratchy in the pot...would be fine for recording from another room but needs better spring fix.