Need response from a Castle tech for MMM question

[BrianG]

Not sure what backfeeding the ESC while keeping the BEC intact will do. Depending on exactly what is bad (and how), it could basically short the external BECs voltage (which would send the external BEC into a cycling shutdown condition).

Back during my first mod, I was using an external BEC and didn't remove the red wire at first. Well, the KF voltage was ~6v, but the MMM BEC was ~5.5v and the KF heated up quite a bit. That tells me right there that the MMMBEC was heavily loading the external BEC because of the higher external voltage. So, even when everything is working normally, using an external BEC AND the internal one at the same time doesn't work.