A bit of info please (savage conversion)

[Nixpus]

Turns out that my rear diff was ok.

One of the rear dogbones had a tendency to get stuck in the axle cup (in lack of better words). A bit of grease added and now it runs like a dream :)

Im wondering if there is a good low budget steering servo out there? The one that came with my chassis can hardly move the wheels when the truck isn't moving... and its slow.