I was about to go hunt down Spring #155, but thought I'd try to adjust the trunk first.
Here's what worked for me:
1. Open trunk.
2. Loosened the nut, closest to the plastic hood, on the male end. (located on the inside of the hood)
3. Tightened the nut, furthest from the plastic hood, a 1/4 turn. Note, this nut is physically attached to the male end (post).
4. Closed trunk and tested opening w/key.
5. Repeated steps 3 & 4 until the latch popped the trunk.
6. Tighten the nut closest to the plastic hood to hold the set position in place.
For me, I needed to only tighten the post about 1/2 a turn. The trunk lid now pops open at the turn of the key.
Might work for others.