If the pin on your door jam is 1/8"" too tall, causing difficulty in connecting it to the latch, you could try the following solutions:
Sand the Pin: If the pin is made of metal, you could use a metal file or sandpaper to remove some material from the top of the pin until it fits properly into the latch. Make sure to remove material evenly and check the fit often to avoid removing too much.
Shave the Latch: If the latch is made of plastic, you could use a sharp blade or utility knife to carefully shave some material from the top of the latch until it fits properly over the pin. Make sure to shave evenly and check the fit often to avoid removing too much.
Install Spacers: If the pin is too tall and cannot be adjusted, you could try installing spacers between the door and the jam to raise the jam and bring the pin into alignment with the latch.
Consider a Replacement: If the above solutions do not work, you may need to replace the latch or the pin with a correctly sized component.
It's important to use caution when modifying or adjusting door components, as this can affect the operation and safety of the door. If you're unsure about the best course of action, consider seeking the help of a professional
locksmith Belgravia.