Camber, Joe- - - -not caster! He's destroyed all the geometry that was built into the axle with the drop and the spindle change, so anything we suggest will be a SWAG at best. Nothing like going into uncharted territory without a map, or even a clue about what the final geometry needs be. I'm sure he can find somebody to tell him a fanciful lie about what's right, but it won't be anyone with any real understanding of steering angles.
Jerry