I worked on 4 pistols so far this morning, and each one had a particular problem that it would have been impossible to correct looking through all of the books mentioned, which I have, plus many others.
Working on pistols is a highly imperican undertaking. You might want to go about it this way:
1. Write down what you want to accomplish. Be specific: I want to lighten the trigger pull by....." etc.
2. Write down all of the ways it is possible to accomplish your goal, preferably without resorting to Dremel Tools and cold chisels (though these are useful when lyu get the hang of using them.)
3. Record your results.
In a few years you will have your OWN troubleshooting manual, and you will never have to re-invent a technique.
It sometimes helps to lay the parts out as they come together in the pistol and reason out how they work and what can be done to improve their function. Scarey at first, but with experience, it actually becomes second nature and some may even say fun.