Over the last few months, I've noticed that my car often doesn't hit the selected % for scheduled charge, and can be over/under by as much as 3-4% (e.g., charge set to 80% will result in the car being charged anywhere between 76-84%). Has anybody else seen similar behavior? It's been a year since I've drained the battery down to the single digits and am wondering if I should do that again to smack some sense into the BMS.