You can get a socket in there, it just takes a little finesse and a lot of extensions. It may help to remove the inspection plate on the tranny as well. Sounds like you may need to persuade the lip out of the way a little bit, be creative with this one, just not dumb.
2000 WJ LTD Shale Green metallic, stock for now
2007 Yeti AS-X, Avid Code 5's Rockshox Totem,
SOLD: 91 XJ