I ordered a set of DAS fittings from 3Rivers so I could use my Samick Masters longbow limbs on my Dalaa. I noticed they looked a little different than the older sets I have. They are also about 1/10" shorter than the older ones. Anyway, I installed them in the limbs and tried to mount them on the riser. That's when I found the problem. The thumbscrews won't screw all the way in them. They only go about half as deep as the do in the old set. Both fittings are like this and the threads don't seem to be damaged. Even tried a different set of thumbscrews, no luck. Any ideas?? I'll call 3Rivers but they won't be open until Tuesday. These are the Hoyt/Korean versions which are the same as the other sets I've used.