Hey All,
Slop-free steering: I've gotten very close to that these days. I use Tamiya 4.8mm balls (blue Aluminium) and ballcups, on the recommendation of Cobra, and I have to say they're pretty nice... Add the almighty chunk of plastic sheet (from an old bag of parts for instance) in between the cup and the ball, et voila, it's nice and free, with almost no slop and absolutely no binding. Using double-servo savers also helps because the bearings are further apart. I've only broken ONE balljoint so far, but it could also have happened with steel ones.
Go Masami, and show all the folks who abandoned the yoke that they were wrong!
Later,
Paul