[Kalun D]

It's hard to tell for sure from the pic but I looks like the axis of the inner rod ends aren't parallel.

When you adjust camber with one or both of the inner rod ends they are going to move closer or further from each other thus necessitating tedious shimming.

If you make them parallel this won't happen.

It's a shallow angle on the front rod end so you probably can't do what you did on the rear one with a separate piece. Might be easier to bend the front leg.

Also clamp some more before you weld, probably right at your 2 unclamped rest points. This thickness tube will warp quite a bit if not held rigid during welding. It will warp at least somewhat even with full clamping. You can heat to just barely dark cherry red and bend slightly to compensate if necessary. Turn off your shop lights so you can see when it just starts to get red.

Welding may burn the plating on your rod ends also, you might want to rig up a jig without them or rig some jig bolts or cheapy rod ends. You'll definitely want to re-tap your internal threads after weld.

That's an interesting looking upright. Are the fins and gaps to cool the bearing or allow cooling to the brakes? What metal is it fabricated from?