Should you use the latch on an "Easy-Lift" Lid?

A customer asks:

I have an Easy Fire kiln. When I fire it I lock the lid with the lid latch. A friend recently told me that this is incorrect and could damage the lid. Can you tell me if the lid should be locked during firing.


The latch is there to be used to lock the lid in the front - otherwise it will want to rise slightly while firing. It is still free to move in the back to relieve stress from expansion.