Back the limbs of 2 1/2 turns evenly and muscle up...........either that or get it into a bow press and save your fingers a bit.
It can be done.......I did it with my Liberty, however I took it back off after about 5 minutes because it was pulling the string/cable too far toard the slide creating a hard angle off the idler wheel.
I just put the stock slide back on . I think there is a different aftermarket that will work a bit better on the Liberty? Hicks? or Bomar.....can't remember which.