The improvised
spring repair on the chopper 1 has been holding up very well
these past 2 weeks.
Before that I was using it
with only one spring working and I can't really tell a big difference
since I got them both going.
I think in most cases gravity
helps the fingers return to home position when the axe is being pulled
back for a swing and I suspect the springs help to prevent a strike
while the finger is fully extended.