G2s have more bend in their backs that I've noticed compared to other gens, so getting at the right angle to remove the tail could be a bit harder (hemostats might make it much easier though; I've never used them for that job).
The plastic is hard, so soften the plug with either hot water or a hair dryer before trying to put the head back on.
As for the legs, pipe cleaners. Thick and fluffy kinds. If they don't actually remove the rust, they'll at least loosen it so you can flush it out with soap and water.
Good luck with your project!