I bought the basic 10/22 a year or so ago, and it's been fun to shoot, and fun to customize (new stock, new barrel, new mag release, new buffer, new bolt lever, new take-down screw). But in the process, I've had a chance to look at other 10/22's and I find other bolts are far more nicely finished than mine. Mine is a rougher casting, and the machined surfaces are not a nicely polished as several other stock factory bolts have been. Mine has slightly uneven edges and machine marks still quite visible. Does Ruger fit better finished bolts on some models?