The left and right pin portions of the connectors on the surge output terminal and AC/DC output terminal are becoming loose. Is it okay to tighten them ourselves?

The left and right pin portions of the connectors on the surge output terminal and AC/DC output terminal are becoming loose. Is it okay to tighten them ourselves?

Since the nut on the back of the panel must be secured before turning the pin, adjustment by the customer is not possible.
(The wiring is secured with nuts, and there is a possibility of it breaking.)
Please consult our Customer Service Center.