If a FSM calls for blue 243 why would the factory use red during initial assembly?

In the past I have used a small gas torch to heat the allen driver and insert that into the bolt to dissolve Loctite.

 

Take that explanation with a strong sprinkling of salt. It's not written by an engineer, that's for sure. In fact that and this one (https://ebcbrakes.com/articles/sd-sy...-how-it-works/) are pretty clearly written by someone who doesn't understand physics or braking systems well.

If the rotor is fixed rigidly in place by the buttons, it's no longer a floating rotor. The rotor does not expand inwards (shrink) when it gets hot.

 

Very true, however they are great rotors! These are my Harley style, slightly different in appearance to those show in the link above. Front then rear:

 

Yeah, I found it odd that a Major Manufacturer would state that inaccuracy ...