LOL, there is definately a right way and a wrong way to work on the trigger group. The trick with stoning is to have a complete understanding of the parts and how they work. You've already found out by trial and error that stoning just means to polish without changing the shape or removing any metal. There's a trick that you can do which eliminates any slop between the sear and the disconnector by using JB Weld, but as many have discovered if these two parts become glued together the gun will go full auto.

The 10/22 is a great gun to fool around with. It's design is simple enough that the average guy can have fun working on it, but it's complicated enough to give you many options when customizing it. Mine isn't as good looking as some of the custom ones that others have posted, but except for the scope and bi-pod my gun is 100% stock.