There is almost no better feeling than fixing, tuning, and honing your Colt to a quality well above the norm. You know exactly how it runs, why it runs like that, and what to do if something is amiss. You can make it perfect to suit your personal preference.
It is kind of like doing all the remodeling on your home, which I do also, you can rest assured knowing exactly what was done and the quality of it. You have no fears down the road that problems may arise because you had someone else do it without knowledge of what exactly they did or how.
Kind of like the saying "if you want it done right, you gotta do it yourself".