I've owned 3 wasr's. The first I bought the day I turned 18, and the third I bought a few weeks ago. I beat the hell out of my first one. I ran cheap ammo through it, never cleaned it, and just treated it like crap. It never once skipped a beat. The second one I ran thousands of rounds through, cleaned it regularly, and was always able to get good groupings at 100 yards with iron sights. Never once a hiccup with that one. I haven't taken my newest one to the range yet, but I'm assuming that it's going to live up to the standards of my first two.
I look at wasr's like something that might not be ready right out of the box, but with some TLC they are a fantastic AK. Would benefit from a stronger barrel, but unless you're shooting full auto it shouldn't matter. I've ran 10 mags through my second rifle in a single range day fairly quickly, and I never had a problem. Except for the hand guard almost melting my skin haha.
Bottom line, there's nothing wrong with them.