well, one could argue that VTF is the only thing that should change during ongoing setup, and considering the ambient temp in my place can vary quit a bit depending on season ...
(Even in the Nagoaka guide, they say that VTF and temp are important)
Do they give set-up data vs temperature and how does it affect performance over variable day-to-day temperatures? This is a question that may not have a definitive answer.
Use of thermo-elastic suspension materials that are significantly variable at normal environmental temperatures seems odd to me unless the optimum temp. is specified and a constant temperature room is employed- not exactly consumer friendly. Just my materials engineering knowledge getting me curious.