hi! i realized that i only use the knobs on my jazz at max or min, so i was thinking that i can change them for max/min switches, so i can use then live easily. the problem is that my jazz is a 77 jazz, and i dont want to ruin it (the vintage value, etc). if i change them and keeop the original parts, can i change them back in the future so i dont ruin anythiing? also, wew can i shop for these parts?