So I have an assembly where every part can mate no problem, except for one.  Whenever I try to mate the part onto the larger assembly it allows me to make one mate (concentric as its mating part join via screw holes) but when I try to use any other mate with it, whether it be concentric (for other mating hole, which have the correct dimensions for double concentric mate, but whatever), parallel (tells me I can't use parallel mate because the angle isn't correct) or even coincident (again with the incorrect angle error).  Can somebody help me figure out why this is happening?

EDIT:  Attached picture of error message it gives me after only declaring one mate (concentric) then trying to make 2 surfaces parallel (which shouldn't be an issue and works fine on all other parts.

The part I'm trying to mate to the assembly is also not slightly mis-aligned.  All of the dimensions on the part itself are perfect, as well as the parts on the main assembly I'm trying to attach it to.