The transform switch on a mixer is used to turn ON and OFF individual channels. The toggle switches used in the DJM-707 are three position switches, but their plastic caps limit them to only two positions. [Sp4rk] removed the switches from the unit, wired the other off position, and trimmed the cap. After this modification the switches have an OFF-ON-OFF motion. Here’s an MP3 of Sp4rk scratching with the new modification and a Coral cache of the transform modification.