(T) Help- I have issues......

...With my drivers door tweeter.

I have suspected for about a month that the drivers door tweeter wasnt working but the standard stilo head unit didnt divide the high frequencies and low frequencies properly. I have just put in my kenwood set up and it is def not working and speaker set up sounds poo (it sounds like its all comming from the passenger side.

The wiring for the head unit is ok, and i know the door has been taken off is there anything else i should check before taking the door to bits?

By the way, how do you get inside the door? i dont want to break anything or mark any trim.

{bump}

Anyone?