We just bought a 2006 Odyseey touring. It’s got 260000km on it. Everything seemed good till we were on the highway and the. When you are trying to accelerate at about 95 Km an hour it starts to shake. As soon you take your foot off the gas it stops. Had the transmission flushed at a transmission place and it’s the same. They didn’t change any filters. Is it a transmission problem or something else.