So I recently bought a Kuiu frame/suspension and a 5000 pack. I was told both were 2012 models but were bought from different party's. So everything seems to line up good except for where the pack slips onto the bottom stays. The stays on the pack seem to be wider than the slots on the pack. Am I doing somthing wrong? I no the 2011 frame won't work on the newer packs without the adaptor kit. Is that what I have? How can I tell the difference between the 2011/12/13 frames.