Looking for help working through a few issues

[s65beemin]

I have a 2008 e93 M3 and have some annoying issues i'm working on now. For reference I bought it used.

1. The car came with 2 keys. 1 works flawlessly with comfort access and the other does not. The 2nd key will lock/unlock via the buttons but the C/A handles don't work, and I have to insert the key into the slot to start it.

2. I cannot get the key and memory to delete. When I use the spare key it automatically goes into full M Mode and I have to manually turn everything down/off. I went into iDrive and erased all key memory data.

3. Last, i'm trying to sort the roof headliner. The previous owner used a ton of liquid nails to "repair" the 7 odd plastic clips that secure it to the metal roof. I attempted to fix it and made it way worse. The plastic wings on the C pillar are all damaged so I went ahead and just ordered an entirely new panel from BMW. I figure out the back cable bungee disassemble, however I cannot figure out how to remove the front cord from its mounting. I don't want to damage anything and be unable to install the new one.

4. Last, when I unlock my car the drivers side mirror will tilt all the way down, I have its position saved via the memory seat, i'm worried about burning out the mirror motor.

Thanks in Advance!!!