Things checked, observations, and conditions prior to repair

Please again note to read this factually for one of two bikes.

Symptoms and Observations:

Most all of these symptoms and conditions existed until the repair, at which time they were never again observed. All of these were communicated to dealers and QLink, both of which continued to push non-fixes to the base problem.

1. Upon draining coolant from system to replace with new, small black flecks of paint came out of the coolant drain plug with the antifreeze. This happened the first three times the coolant was entirely drained while working on the system. At these times, it was assumed that the flecks were from inside the radiator fill neck, where the cap's gasket rubbed some of the radiator paint off. However, this is not the case, and though I didn't realize a very important part of the observation, I figured it out later. This piece of the puzzle was that, when the flecks were bent in half, they did not break. They were pliable, not brittle. This should have told me that they weren't from the radiator, because the paint on the radiator is brittle enamel-like paint. At the time, I wondered if the water pump was made of rubber, so I removed the cover to inspect for play, wear, or any other obvious visual cue. I found the pump, of course, to be made of metal.
2. The problem came on without warning, when accelerating quickly under load. Specifically, going uphill and accelerating around a turn at 45 mph.
3. Another symptom of the problem was when the radiator cap was off. Sitting still but running, I "goosed" the throttle quickly to 1/2 to 3/4 full range. As I did this, the coolant would raise in level violently, and pour over the filler neck.
   
4. If the bike was sitting as in #3, and you GRADUALLY increased the throttle, the coolant became turbulent and airy, but wouldn't surge out and over the fill neck. When the throttle was released, it appeared as though the coolant level dropped a bit. I quickly realized that most of this was a result of coolant going up just high enough to overflow into the recovery tank, but not high enough to spill over the radiator cap neck.
5. Following test rides where coolant blew out, when the bike cooled down after stopping, the radiator would only be about 1/3 full, and the recovery tank antifreeze level would be between the bottom limit line and 1/2" lower than the lower limit line.
6. The bike would run normal if you did not goose the throttle, or demand a great deal of acceleration under load. In this condition, the fan would cycle normally, no coolant would blow out of the recovery tank when it filled up, and the bike would run about 3/4 of the full amount of the white zone on the temp gauge.
7. No appreciable amount of smoke ever left the tailpipe. Not when goosing the throttle. Not when starting up. Not when throttle was snapped back to zero.
8. Some steam / gas was evident at the radiator when pushing coolant out, but was deemed normal due to the apparent temperature of the coolant and ambient air.
   
9. Exhaust smell, if any, was always masked by "new vehicle" smell. Exhaust gas smell was not readily apparent because it was a new bike.
10. Exhaust gas analysis did not take place, because I couldn't readily find a source.
11. No oil was readily apparent in the coolant, though it did appear stained fairly quickly. It turned from bright green to a more brownish color soon after replacement. I was not sure if this was a result of contaminates being cleaned out, or if it was, indeed, exhaust gas.
12. The spark plug never looked any other way than completely normal.