I use the Easy Off Method. I put all my parts on a wire rack or something so I can carry them outside and get them all without touching them. Then I spray them with easy off and let it soak for three minutes, then rinse. I spray, let soak for three minutes, and rinse. I spray and let soak for three minutes and then rinse four times total on the parts that I've been doing by axial. Different anno will require different times. But soaking in short intervals, rinsing, and starting over keeps it from pitting or anything like that, and makes the finishing process A LOT easier. After the fourth time of the easy off treatment, I soak them in
simple green over night. After that, I buff them good with a scotch-brite sponge. They will really start to shine after that. Once I'm done with that, I use some good aluminum polish to finish them out. It sounds like hard work, but I was surprised how easy it is, especially with small pieces like on RC's. It take some elbow grease, but it's well worth it.
NCNitro gave me the tip about soaking and rinsing, then start over, and I've been more than pleased with the results.
Also, make sure that you use ORIGINAL easy off oven cleaner or generic, NOT the scented kind or anything like that.
Also, wear some heavy duty janitorial goves of some kind. You will notice that the gloves fill up with water after the first application, and that's because the easy off eats holes in the rubber. So imagine what it would do to your skin.