Another trick to get through those stubborn stubborn 50's... (depending if you really feel like doing it if you really hate them that much).

Multibox some DK's, doing the super easy newbie quest will get you a hair from 60 with RAF experience.

Then grant 2 lvls to whatever character you want, delete the DK's, repeat.

Don't need to go all the way to 60 though, just 59.

55-57 - 1 lvl grantable.
57-59 1 lvl grantable.

Might even be easier to just delete them at 57 and repeat...but eh. As I said, this is if you really hate RAF'ing through the 50's.