Actually, it's the uniqueness of all the other AK barrel throats that accounts for the mediocre accuracy of all but the Valmet pieces. The Finns just went ahead and used a standard type throat, instead of the long tapered throat that the Russians instituted, which was copied by all the other AK building countries except Finland.
Best shooting 7.62x39 rifle I've ever owned was the M62 Valmet I bought around 1973. Sadly it was stolen from me many years ago. I do now have a 7.62 NATO piece, and have very mixed feelings about it. It shoots well enough, but it's on it's third firing pin. Doesn't break them during live fire, but dry firing is poisonous to them. The folding stocks on the late versions are horrible to fire, but the Galil folder fits right on perfectly. Don't have to change the hinge, just the rear stock piece. Fortunately, I got 4 mags when I bought the thing, and don't feel the need for more.
By the way, I wouldn't count on Tromix for any more mags. Last I heard, he'd closed up shop, tho I suppose he could reopen it any time he's a mind to.