I just ordered a Kimber Custom Target II and I've heard that it's internal parts are of a lower quality than they used to be. I intend to put 500 rounds through the gun as it is. Then, I'll probably swap out the sear, the connector, the slide release, and the mainspring housing for some harder parts. What do you guys think? Is this a waste of time and money? If it ain't broke don't fix it? Are there any other parts that you would swap?