You need lots of luck and a good deal of patience. Then you need a good brand of rusty bolt remover. Try to spray the bolt remover product on any bolts that you can get access to. Do this a day ahead of time and if possible do it several times during that day. The bolts that extend to the underside of the fender may well have a lot of undercoating (tar) on them. If you try to work off some of this tar you will have better luck in getting the rust remover up into the bottom part of the bolt. When actually starting to remove the bolts work the bolt loose and then spray some rusty bolt remover in from the top, I am assuming that most of the upper bolts have enough paint on them that you cannot get any remover into them until you start them out. Then screw the bolt back down into the nut a bit to try to get some of that rust remover into the nut. Continue using the up several turns and then back down a turn or so until the bolt is all of the ways out. Do not be shy in the use of the rusty bolt remover. I cannot tell you what the best of the rusty bolt removers are out there. Maybe somebody else has a favorite. Remember that WD40 is really only a water repellant and not best for this job. I also had to remove the door to get to the rear bolts of the fender. Those screws required a impact driver to get loose. If you remove the splash shield from the fender well behind the tire you may gain access to the lower part of the bolts at the rear and top of the fender.
Remember that the rear of the bolts for the door can be accessed from inside of the door if you choose to remove the door from that side of the hinge. If a nut freezes on the bolt it will start turning in the nut cage. Try using a pair of vise grips to clamp onto the nut cage if you can get access to it. The good news is that once you get the fender off you can tap out(clean ) or replace any of the nuts by opening up the nut cage and replacing it in kind. They are available from Roadster Factory as are the nut cages. I will admit that I did break off at least one bolt in the removal process. Try to avoid this as it makes getting the old nut out of the cage very difficult.
Charley Fitch
