..what delay box are you using, I have been using a Dedenbear CO-2 crossover box and it has been flawless but a little hard to punch those little buttons that change the dial in's and the numbers are small, but I like the flip switch for the crossover, also hard to see at night with no lighted screen so I have a light in the car just to see the face to make changes,,don't need a bunch of bells and whistles and don't need any timers and stuff just a simple crossover box thats easy to read,use and see day or night, so what ya got???