I have a 2012 pse omen pro. In search of 27.5", 27" cams! I have a set of used in good shape 29" I could trade. Thanks!
Did you go to a bow shop? They could get some from pse for you and hopefully get everything tuned up for you after they swap cams. I can't remember for sure but you might need new strings too. Sometimes with the cam specific bows you will need to change to shorter or longer string and cables.