Your global command is wrong. You have:

Global (outside) 1 x.x.x.118 netmask 255.255.255.248
Well, from what you describe x.x.x.118 is another device. It should be the outside interface or whatever IP you want to use for PAT.

For kicks, try using

Global (outside) 1 interface

See if this works.

<EDIT>
I really wish I would have read all of the post instead of skimming, I would have noticed that everyone else agrees with the global command being wrong.