Mission Improbable...  

Ok, first off, get a set of the tinkered boots.
Equip them.
Drop your mount. Do it now and do NOT put it back on again until you are completed. The mount will cancel the effects from the boots and the disguise you need.
Also, do not loot anything or you will drop the disguise.
Get the mission
Zone in and loot the yeti.
Open your inventory and use the yeti to disguise yourself.
Go around to the right and go into the lower area. Place the ones that are available there.
Jump across the chasm to the west tower. There are two to place inside there.
Grab the board from the west tower.
Jump back across with it and go due east to the next tower.
Place it across part of the chasm. It does not span the whole chasm
Jump across using the board to get far enough
Go up and around and place the remaining listening devices.
Come back down. There is another board that can be placed to make the jump easier or you can jump back to the first board you placed.
Go around and back to the exit.

I cannot get this quest done on my warlock or a couple other toons. Every time I attack 1 of the named it pulls 5 other mobs and so I'm deleting the quest.

every time i try to jump to the left hand island to get to the third point, i fall and die. i don;t see a plank or a bridge or any way to cross the chasm at this point. how do you get across ti?