How comfortable/experienced are you working with mains voltage AC? If you're experienced in the area, it shouldn't be hard or expensive to rebuild the controller.
If you're not comfortable working with mains voltage AC, something like this would work well:
http://www.auberins.com/index.php?ma...roducts_id=467
If you get it with the SYL-2352P controller option you get programmable ramp/soak capability, so you can automate your full annealing cycle. (I'm really fond of the 2352P, have built several kiln controllers based on it).