how about that for repeatabilty
1992 boil-off experiment has been one of the most repeated CF experiment.
Its behavior and outcome are easily reproducible. You can easily boil off all the liquid, while generating a lot of foam.
However, the energy balance depends on the correct interpretation of the experimental data. If you confuse liquid water with foam, as done by F&P and others, you can get a lot of apparent but inexistent excess heat.
But JR keeps repeating that F&P experiments and calculations were irreproachably correct.