Hmm, I didn't notice two 'lines' or anything for the plate the spring sits on to go. Just right side up and upside down, both had a notch for the spring to sit on/in, but one way looked like it'd cup the spring and the other beveled outward. Used the beveled one..

But are the rears even adjustable? I didn't notice the plate being able to be flipped or anything on the rears and assumed they were non-adjustable.

Thanks