a story of joints and bush

picked the wagoneer up today from the shop, they replaced the right front u-joint. took the car to sams club in natick. it has a shake at ~55mph and resonates at ~65mph, which would not concern me much for a 15 year old car, except those are strikingly similar to symptoms i noticed aproximately 700 miles before a middle u-joint broke and dropped the axle onto the pavement. on the good note however, my copy of bush, 6teen stone and the science of things arrived yesterday. yay regression back to high school music. can't wait to subject the lab people to this.