Reseat the O-ring into their
4channels.
-Do not stretch the O-rings too much . Be sure that the O-rings are not warped and they go into the channel correctly.
+Note
The 8B -104 package includes an O-ring set (three large and small O-rings, O-ring lubricant, and two screws). The O-ring set is also available optionally. Be sure to have this set with you wherever you go with your 8peedlight.