First off is your CP4 0402 ready? Before we could begin placing 0402's we had to have a vision upgrade. Once you have that or are sure your machine can handle 0402 then you will have to get 8x2 feeders. There may be a way to rig an 8x4 feeder but i'm unaware of it. As for placement and reliability I have found it quite capable. I generally have a low kick-out rate on 0402's and the machine seems to handle them well.