Sounds like you just need to add a couple thin spacers, and tighten things back up somewhat. I had the same thing on a bow of mine, and got some nylon washers at a local hardware store. Worked like a champ. Got them close to the right thickness, then sanded them down to what they needed to be.
2006 Rytera Bullet X 60#---2008 Moab 70#
2008/12 Firecat 60#--- 2010 Warthog 70#
2010/2012 Alien X 65# 2011 Onzas 60 & 70#
2009 Warthog 70#---2009 Firehawk 70#
2010 Strother SR-71 65# & 2012 Strother Rush 65#
I hunt, therefore I eat. lol