Agreed, I recently had my sedan re-aligned and managed to get +4.25 degrees castor without modifying the guards. Pull the lower end forward with teh use of the adjustable castor rods and the tops rearward with the S13 camber plates installed diagonally. . Ended up with neg 0.5 degrees camber at resting height. I also have the B-pro 30mm bump steer spacers to retain some angle in the LCA with my very short B110 struts.

Dont go too radical with pulling the LCA forward as this will put strain on the LCA pivot bushes [trying to rip them out of the engine crossmember.

Positive castor helps the eliminate the straight line wander at speed. 1200's can be a bit floaty at speed. Cornering is a different story.