If you are wanting to shoot 55 #'s, you should keep looking and find a 50-60 bow. It is too bad you did not post this about 2 weeks ago, I just sold an Ovation with a set 50-60 limbs and set of 60-70 limbs.
Check out the classified at archerytalk.com. I see a lot more 50-60 bows for sale there than I do on e-bay. Good luck in your search!