A couple of months ago, I had the front rotors turned, installed new front pads, lubed the caliper pins, installed new rear drums, rear shoes, and rear wheel cylinders. I flushed all four brake lines, and bled the lines repeatedly. When I finished, the brakes were "okay", but not great. Now, after driving a couple of months, the brakes are much better. What's going on? Have the pads and shoes finally become matched to the rotors and drums?