Just left the machine shop and what has apparently happened was something I had never heard of…the early model blocks have room for a wider flange and later model blocks have a narrow flange, I do not know what year this block is, it has pn 2468330-M on it but no date. The machine shop traded me some King bearings with a narrower flange and they fit perfect but the are 1/2 grove vs full grove…should I be concerned? This is a 1000 hp bracket engine, thanks.