Locksmith Central Islip NY Suggest that On the off chance that the thumbturn still pounds, relax the three screws hanging on the bolt plate on the edge of the entryway. Presently, where you see the thumb turn, envision it as though it were a clock. At 8 o'clock, or 5 o'clock, on the edge of the entryway where you see the bolt body, you will see a little, countersunk set screw. Loosen it a few turns as it were. Ensure the thumb turn is in the vacant position. That implies, when you turn the thumb turn, you will feel it snatch somewhat with a spring and metal roller.