A1: This is the tolerance of some parts. A small number of transmitters will encounter this problem.
You can take one of the XS screws on the side and install it at the top of the trigger, as shown in the figure:
If you want to apply for new parts, please contact Z-LIN(Ezekiel lin).
When the Rasen chamber is not installed, if the trigger rebound force is insufficient, it means that the spring in the middle of the grip is crooked, please reinstall it.
If the trigger is abnormal when installing Rasen chamber, please polish the trigger:
A4: Check if there is air leaking from the gap