A bit of work with files and sand paper can tune it up.
Clean all of the mating surfaces then with a Sharpie paint them and slide them together and then examine the surfaces.
Where ink gone it is rubbing and ink left not.
Careful work over time will improve it.
Lapping will ruin it.
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Clean all of the mating surfaces then with a Sharpie paint them and slide them together and then examine the surfaces.
Where ink gone it is rubbing and ink left not.
Careful work over time will improve it.
Lapping will ruin it.
Sent from my SAMSUNG-SM-G930A using Tapatalk