In our online installation video, before thread locking the screws
down, we recommend that you install the ejector system to confirm things
are working correctly.
If you are having issues where the shot shell is not ejecting, or
won't cycle rearward correctly as the action is cycled, you may just
need to adjust the ejector spring tension.
The Sully 870 Ejector System will allow shells to be ejected without
the ejector spring installed. First thing is to install just the
ejector and 2 screws (with no ejector spring) and test cycle - the shot
shell should extract and eject correctly, but with less ejection power
due to the lack of ejector spring tension. If it works without the
ejector spring installed, then you may just need to soften the ejector
spring tension until things work correctly.
Gunsmiths and Armorers sometimes have to adjust spring tension to do
fine tuning until the desired spring tension is found, as each gun can
be slightly different due to variables like extractor spring tension,
types of shells used, and even sometimes a mix of factory parts when the
gun was built by the manufacturer where we have seen variables.
This is where we generally set the ejector spring tension to, and
you can see the spring height as compared to the 90-degree corner of
what is called the shell stop of the ejector.

If you need a little less spring tension, how you do this is to use a
small set of needle nose of flat head pliers, and grasp the ejector
spring in the area right behind the part that tucks through the ejector
window (pocket in the ejector that the spring goes through to tuck under
the backside). While holding the ejector in the pliers, you can push
downward slowly to remove some spring tension. This area of the spring
should also be braced to add more spring tension as well.

Here is a pic of a spring that was adjusted to have less tension.
Compare the spring height to the 90-degree corner of the shell stop in
this pic and you will see the spring sits lower, in comparison to the
top pic where it was higher.
