At least one of these sets should fit cleanly. Sometimes there is a buildup of lacquer on the inside of the limb slot. You can try using some string wax on the slot - less drastic than takikng a file to it. (Though the fitting is pretty much standard, their are tolerance difference and there may be extra lacquer in the slot.)
Are you sure you're putting the limb between the top of the main bolt head (the one with the tiller/weight adjustment) and above the ridge on the shaft of the bolt? To clarify, the bolt has a cap that goes above the limb base (towards the target), and a ridge meant to go under the limb. If you're pushing the limb into the lower bolt flange, it's no go.
I did find that Samick limbs didn't fit on the KAP T-Rex because the T-Rex tapered towards the center of the riser (towards the limb base) while the Samick limbs were more parallel to the limb and got pinched on the outside of the limb in the tapered KAP limb pocket. I don't think this is the case with the Nexus.
I hope this helps.
Are you sure you're putting the limb between the top of the main bolt head (the one with the tiller/weight adjustment) and above the ridge on the shaft of the bolt? To clarify, the bolt has a cap that goes above the limb base (towards the target), and a ridge meant to go under the limb. If you're pushing the limb into the lower bolt flange, it's no go.
I did find that Samick limbs didn't fit on the KAP T-Rex because the T-Rex tapered towards the center of the riser (towards the limb base) while the Samick limbs were more parallel to the limb and got pinched on the outside of the limb in the tapered KAP limb pocket. I don't think this is the case with the Nexus.
I hope this helps.