Don't lose the alan wrench!
If you have a saw and a drill, take a block of wood that you can hold in your hand. about 1.5X1.5 and 6" or so long. drill in the end about 1/2 the length of the allen wrench. then on one side drill in so you hit the other hole. saw down the drill hole you made with a hand saw until you get to the other hole. Now you should be able to "pop" the allen wrench into this. Use a hose clamp to lock the sawn end closed. You now have a floating handle on the allen wrench so you do not have it fall to Nemo when you put on the zinc!