Brian is everywhere, Check your local pub, he will be there to.Well, I do get around...
For the lowers, I mounted them, traced a line and just trimmed them. The plastic cuts really easy. The black inner liner was already trimmed when I got my lowers, so I didn't need to do anything with those, but somewhere recently, someone trimmed that to fit.
My C5 switch was on the left side under the pocket cover: