RE: It Doesn't make sense!
I have used a trap door with a finger release for 2 years now with no problem. I use the old metal "prong". I bend the inner side up to make a side wall for the arrow to ride along. All the cushion plunger spring tension does is change the arrow spine. This can be achieved in ways other then cushion plunger tension. I know of 2 people who made peer groups in the triple crown with this set up.