I have a 93 accord wagon manual transmission with 174k on it that I got a couple of months ago. It shakes at around 65 miles an hour or so sometimes less but always around 3000 rpms. It has new tires, they have been balanced, and the cv joints all look like their in perfect condition. It has a cracked bushing in the front motor mount but I was told that would only resultin a shaking during idling and in reverse. Any ideas what to check next?