From your servo's go to the matchbox. Don't use any extension between the match box an power box use only the one supplied by jr(the short one). Then adjust linkages mech. then adjust the match box to fine tune everything i like to use an amp meter but many people do it by ear. The reason you don't want to use any extension between match box and power box is that you will be running 3 or 4 high touque/high current servo's and you need to keep the reistance as low as possible since you will be drawing some high currents through that one extension.

Good luck

Tony Fandino