Update: Well, it looks like I'll need to pop for the $50 rubber washers, at a minimum. I bolted the rear axle to the springs today and because there was some tension on the springs toward the outside of the axle, the washers I cast on that side squooshed out. Dang.
Either that or remove them and recast with stiffer material. What I used was I believe ~40 durometer, and they have similar stuff that's supposed to be about 80 durometer. They say the harder stuff is like a hockey puck, what I used is more gummy bear like. For now, the chassis is rolling, but not road ready yet. So I'll deal with these a bit down the line.
