Yes,
I spoke to Rick and Jason at EMS factory yesterdy, they asked me to do tests, immediately linked my jerking to LOCK future.
But my E+ is perfect untill about when first bar on Batt indicator starts to blink and next it's worst and worst.
I think battery voltage drops with miles traveled and electronics are supplied from main batt and if you don`t have good voltage regulator electronics are affected by dropping voltage.
I rearly used LOCK and I had this problem from day one. Seems they didn`t test my kit untill 50% discharge?
Even manual says they test only for few miles.
Pity, because it is so nice motor/controller, one of the best in the world and one of the most efficient in the world.
Unbelievable but after 10 minutes runs at over 40km/hour motor is almost cool, very , very slightly warm and at such speeds my E+ draws according to display BELOW 1000W.
MCM