New To T4 Trident

Hi everyone were new to our T4 Trident, just getting used to it and loving it  Living in Norfolk already had a few overnighters and find the Trident a fantastic layout with the rock N Roll bed being so easy to convert at night time. I do find the electrical hook up plug extremely tight to push into the socket & have noticed some kind of lever...!!! inside the van external socket, does anyone know if this adjusts or extends the socket to make the connection easier OR what else does it do....

Anway looking forward to chatting on what is our new passion..

Hi
Welcome to the forum from Bridington 
Boaby