I took some more pics but my camera is only a 2 MegPixel and closeups come out a bit blurred. I can describe what I did though.
You'll see my throttle/brake servo in the bottom left. On the servo horn there are two metal shafts, (one on top of the horn and one on the bottom). The silver items approx. half way up the shafts are for turning the shaft in/out giving me more/less braking. Going further up the shaft you'll see the red heat shrink. You can also see where the shafts pass through hoops. These hoops are connected to the brake cams (one forward and one in the rear). The forward brake cam/hoop is the bottom shaft and runs underneath the center diff plate. The rear brake is the shaft on top. When I get on the throttle the servo operates in such a way that causes both of these shafts to move inward or toward the fuel line you see in the picture. And just the opposite when I close the throttle. As you can imagine, on/off throttle causes these shafts, which are resting on the metal hoop/cam rods, to constantly rub on the hoops. I simply insulated the shafts so I no longer have metal-to-metal contact. I hope this helps. Post a pic of your situation and maybe we can work a similiar solution for you.
