Hello, I'm flying the RTF Eachine Racer 250 pro. I'm having issues with voltage regulators. I've gone through two PDBs with blown voltage regulators and just recently the voltage regulator on my vtx blew as well. Since then I have soldered a UBEC onto one of the PDBs to take the place of the old smd 7805 volt regulator and have been ok so far, but then the vtx one went as well. In all three cases this happened after a crash. I have had lots and lots of crashes, however the only thing that I can directly correlate to all three regulator failures is that in those three specific crashes the battery had become disconnected from the quad. I'm sure they disconnected before I could flip the arm switch as well. Do you think the battery being disconnected while under throttle has anything to do with this? Or is it something entirely different I"m overlooking? Thank you !