@brad112358 and @Satoru_Sasaki, great info. Thanks for taking the time to test and post the info.
~16min on the VTC6 is actually pretty impressive.
According to Viper Boards Pictures there are 18 screws holding the SV together. Any idea how much those weigh? I’m wondering if swapping screws for some tape / glue would gain anything (other than mid-air disintegration, that is 
)
Ditching the LED’s would be an option too.