The screw your using in the back should go in where the sight is first,,,, that is the locking set screw it does not go in the back.... then used the smaller set screw to go in the side of the sight block to loc the blade down...
those screws work really well stopping people from slamming the bolt back..... if you decide to blaze that part on be careful i did that on my early ones.. it can warp the tube and make it hard to get the bolt in ...... It a blaster not a sterling doing a full weenie and releasing the bolt forward will destroy the barrel and front sight ... just thought id share
that.....
These little pains in the an impolite person are tough to form with there compound radius and proper bends... had to get these right so they would form close to the body tube for welding... If you have ever tried making these by hand you will understand the horror
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 ........