I have a June 18 75D with about 33k miles on it. I went to a large 150kw supercharger in Wa state and with nobody else there, at 75 miles range left charging went briefly to about 105kw then within 2 min started dropping. In 5 min itwit at under 70. I read before about throttling on this forum but I was expecting this much later in the car's life. Is there any way to address this?