If you can't figure a way to fit a breaker bar in there with enough leverage, find a friend with an impact gun. A gun and an extension pops those off in 10 seconds. Even a cheapy electric impact should do the job fine, although if you see yourself doing lots of projects in the future, its well worth the money to buy a good air gun. It'll cut a lot of projects down to half the time it would take you without air <img src="/forums/images/graemlins/kewl.gif" alt="" />

-Scerb

http://www.scerbfab.com/carb_faq.html