ORIGINAL: EXW
One more question while I'm at it. What should I expect for flight times on the CX? Right now I get about 5 minutes out of each of my two batteries (sometimes less). One factor is that I live at about 6,000 ft. However, I'm not sure if even with the altitude factored in, I should be getting more out of the batteries.
I thought it might be that my gears were too tight, but they seem to have the recommended play. I also added a heat sink to the motors.
As always, any advice is appreciated.
EXW
Oops, I forgot to answer this one in my last post.

It is entirely possible that the high altitude where you live is lowering your flight times. I fly at sea level, so I don't have any first-hand experience, but I have heard of this problem with helis before. If you think about it, it makes sense. Because the air is thinner, the blades need to spin faster in order to create enough downforce to keep the heli off the ground.
Another factor is training gear. I was getting 7 minute flights out of my CX with the training gear attached, and now that it's off I get 10 to 11 minutes per flight. If I spend the time to completely balance the rotor heads, I get 12 minute flights