Hi.
I have e-bike crossfire. 10000 miles plus. Yes, the cutouts a fecking continuous pain. Make sure to use WD 40 or similar on the motor connector. Cable tie tight when connectors are in place. The display unit connection needs to be kept dirt/dust free. Press reset button on battery after charging. I found battery ok but when gets to 20% it likes to go dead. Great brakes. Spokes do come lose way and snap easy. Stay on smooth roads. Hope this helps.