Wanhao Duplicator i3 v2 bed spring cap

Caps for the bottom of the springs in the Wanhao Duplicator i3 v2.
I had noticed that bed leveling was a pain and noticed some of the issues were the springs on the bottom didn't stay straight with the top.
The top is held by the protruding bolt, but outside of another bolt at the bottom, or an overly constructed part, I didn't have an immediate answer.
The answer came to me as a cap with a hole in it. The spring fits perfectly inside and the hole in the center is good enough to fit through. They add 1mm or so to the base and keep the spring from sliding. The washer still goes on the bottom. The spring is kept still by the hole in the center and the uniform inset it is placed in.
Originally designed to enclose both top and bottom, this is NOT advised. It is best if the top is left held by the bolt above.