I have a stamped Saiga Ak-74. I bought it from a private party with two standard muzzle breaks. One is after market and chrome lined, the other is supposedly stock and not chrome lined. The aftermarket one was installed when I bought it, then when I went to install the "original", that's matte black, it felt like it was going to cross-thread after about 1.5 turns. After I get the money I want to put a can on it, it would be nice to know if the threads on the rifle or the threads on the break are messed up. I don't have any other rifles with the same threading to test the break on. Any thoughts on how to figure out what's wroung?