There are literally books written about this subject. Smoothing the mating surfaces is likely the best and safest approach for a non-gunsmith. There are some requirements such as honing stones but they will last nearly forever.. I prefer the ceramic stones(ground sides) to natural but either will fo just fine. Remember the idea is to polish, not remove metal. One DOES NOT need to remove all the machinging marks, just round them off a bit. Limiting sear engagement amounts is the next arena. This eliminates creep and a simple stop in the trigger bow that will bear on the magazine when thr trigger is pulled will limit overtravel. They can be installed in stock trigger or replacement trigger can be installed. If you want a trigger job but are reticent to doing it yourself for fear of the danger hammers and sear already 'prepped' are available. The gist is this. If you have the skill and knowledge or are will to spend the time and money to learn one can smooth these things themselves. If you can't do the above then some of the skill can be replaced with pre-smithed parts.. Of course there is always the presopect of simply taking it to a reliable gunsmith.. Or the cheapest and easiest is simply buuying a 1911 from a reputable maker with the trigger and action at the level you wish. This almost always cheaper than either a gunsmith or a parts exchanger... Also I believe one should fire enough rounds to break in a new handgun before starting any project.. For an autoloader at least 500 rounds and revolver 300 or so but more son't hurt. this simply lets the parts settle in. Then clean and properly lubricate before deciding what changes to make..
