Okay - so I'm sure I'm missing something very obvious. When I took delivery of my car six weeks ago it was set to charge to 90% which it did - this generated 227 miles rated range. This happened every night - sometimes it would show 226 but almost always 227. I had some minor work done to the car and the SC moved it to 100%. I failed to notice that, charged it fully and then moved it back to 90%. I have double checked the 90% setting in Visible Tesla. Now the car always charges to 89%. And it now shows 224 or 225 miles of rated range each morning. My OCD doesn't like this. What's up?