On my FC400, I can't back the limb screws out far enough to take the string off without having to rotate the cams by hand. I have backed them off until the entire barrellnut center is completely open, and still not enough slack to take the string or cable off. I've heard this about another FC400 as well. Wonder if we got some short bolts....
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