I'm built an APC using this schematic http://www.jameco.com/Jameco/PressRoom/Recipe3Fig1Large.jpg. But it wont work. I took out the R4 pot because I didn't need it. I did everything else though (at least I think I did). Anyone else have experience building this, and possibly know some problems they encountered, or do I have to put something in place of the missing pot? Any help is welcome and appreciated!
