I did shorten the smaller springs length to help with re weenie it doesn't show and makes things smoother.......... after all its not returning to bolt blow back
Make sure you place this little part in correct,, it is the tension-er for the shoulder part. once aligned first screwing in the set screws to hold it in place.....
Now the spring plate and shoulder rest...... alignment is critical and a pain in the butt.. i use a allen key to keep these item in alignment while i put the set screws in from both sides..
Both go all the way in with them yet they need to trap the pivot catch part ........