Hatchlift Rv Door Lift Kit for Doors from 28" - 32" in Height- Medium

I’m using your heavy lift kit on a 60” tv cabinet that i built and they keep letting the door close..is there any adjustment for these? i am using two

Would this work for an underbed storage compartment that measures 14" in heights and 63" in weight?

Will this works for slam latches? I know it defeats the purpose of the “slam” but can you still push the door shut or will it damage the piston?

Does the gas spring have to be 'disconnected' with the door in the closed position?