Just replaced an engine in a 2017 Land Rover Range Rover Sport Dynamic 3.0L SC. Very costly job for the woman - the motor alone from LKQ was 13k. Well everything went well except when pulling the rear driveshaft it separated - but the ball bearings did not come out. It's sort of like a CV joint design. I could not get the cap back on. I ended up removing and reseating the ball bearings and putting back together exactly how they were and it went back together nicely or so I thought. I paint marked everything too. Finished up the job today and the motor and all is great - but I have a vibration coming from the rear driveshaft over 20-25mph that is very unacceptable. My question is what is my best option?? A replacement used one is $650. It was after 5pm when this was discovered so nobody was open at the local drivetrain shops - which hopefully they can rebuild that part and get me back right for low cost. If it wasn't for all the work removing the shaft I would try reindexing and trying again but that's a lot of work for an unknown result until its all back together. Anybody work on these and have tips on anything I might be able to do? My shop does just about everything but axles/CV's are not my specialty lol