If the card could not move freely back and forth, please go to step five.
If the card could move freely back and forth with little to no resistance, a tightening of the might be required.
To test if the gap is to wide – take two cards and place one card top of another card (flat) – it should not be possible to move the second card into the gap. Please see this video on how to test with two cards incorrectly – not placed flat on top of the first card (as shown in the start of the video) – and correct – placed flat on top of the first card (as shown at the end of the video).
If you can insert two cards the gap is too wide – you reduce the gap size as follows:
First, insert the Hex (Unbraco) key into the socket screw in the core as illustrated above.
When inserted turn the Hex key, in very small steps of 5 degrees of a circle in the clockwise direction.
Then test the resistance of the card gap with the single card again as shown in the previous illustration.
We start by tightening the gap too much and then loosen the gap again – first tighten until a single card can no longer pass through the gap.
When achieved – meaning one card cannot be moved into the gap – loosen the socket screw just a minimal turn in the counter-clockwise direction until a card once again can pass through the gap with the resistance as described above in step three.