the only adhesive used on the whole install is on the centre peice of the front aero kit.

even then not to sure why the instruction says to put adhesive on cause that piece of the kit over clips on gets screwed on from below making it imposible for that peice to fall off or pull forwared as its cliped on from behind.

the rear should not be comming away at all as theres not adhesive used. the only thing i can think of is that your self tapping screws which come with the kit may have come loose.

i know what you mean about the front side edges for that all youd need to do is unscrew that peice and re clipp it back in cause that panel clips in a inward and downward push and if its come away from the grove the edges look like its comming away from the bodywork.

the whole process is easy always remove the centre peices to get to the outer panels this applies to the front and rear.

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2007 X5 4.8i - Sapphire Black
Specs: Aero kit/Pan roof/20" Y Spoke/HUD/Active seats/Heated seats/Comfort seats/Vent perf seats/Bi Xenons/ Navigation/Bluetooth/
Mods: OEM LED number plate lights/ Pheonix Gold Subwoofer/ Solar Guard Window film/Digital TV/ I Pod Kit