I've done several of them but the cap on some of them have four stress relief cuts where the threaded part of the cap is and if you keep turning it the stress reliefs will allow the screw/bolt to keep twisting without popping the cap off. Sometimes, not all the time, you have to thread it mostly in then pull it out... Then yes, getting the whole basket/cup off you need the "special" castlated socket for the nut. You can make your own out of a spare socket or buy the aftermarket socket for about 8 bucks... Don't try to use needle nosed vice grips. I've seen a ton of those nuts all boogered up. Do it right and it will be easier later... It should also have a star washer in behind the but to attempt to prevent it from coming loose. If you're careful you can save it, if not, those are readily available as well... Take your time and don't take short cuts, you'll regret it later.
