I have a completely stock Xmods Street R8 that I havent touched for years but got it out to play with our 9 month old.
I unscrewed the motor connections from the mainboard and there is no power to those points. Im getting voltage on the black/red wires soldered to the mainboard nearest the motor but it doesnt look like its making it to the motor for whatever reason. The bottom of the mainboard looks a bit messed up underneath but it may be normal, i dont know. I never checked it out new.
I may remind you that I've never modified this and it is completely stock.