Micah,
I had a similar problem and found that if I center the spring exactly in the center of the all thread and make try to keep it perfectly straight up and down then it helps solve that problem. n fact, it is almost perfect. The problem was that I could not see the spring below the washer so I cut a piece of lexan and made a wide washer out of it. The now transparent washer really helps me adjust the spring once it is compressed. Also, I find that a small bit of vegetable oil on the lexan helps it not bind as much in compression. Lastly, a bushing that fits snugly inside the spring helps a lot. I will attach a photo below.