No one here has mentioned that, a few miles after riding, torque the spindle bolts again. In variably, I seem to get a bit more torque on the spindle bolts. Loctite on the spindle bolt threads is a good idea, however; I have never had to do this. Proper installation, maintenance and understanding will, usually, keep your cranks tight. While at it, take the time to check the ring bolts, ensuring that they are still tight.

For installation of the crank onto the spindle taper, I start by ensuring that the female fit is clean and burr free. I take fine emery cloth and attempt to round or bevel each of the four leading edges of the spindle. Doing this will dramatically reduce the chance of pushing aluminum out of place while driving the crank arm up the taper. A wee bit of light oil, on the tapers of the spindle will also be beneficial. I use 3 in 1 electrician's oil and only a very small amount.