Our MX was in the service center a week ago as I had noticed since taking delivery a shaking feeling between 30-36mph when accelerating. More dramatic shaking with hard acceleration. I first noticed it when we took the car home, but didn't think anything of it, but it had progressively gotten worse over the past 2 months. My wife didn't notice it until she drove the MX for a week while I was on a trip for work. Took the car into the Eden Prairie service center and those guys are pros. The technician came out for a test drive with me so he could feel the shaking for himself. Said he was confident he knew what the issue was. Shaking occurred and it confirmed to him his suspicions. He said when he initially read our service memo that he ordered the parts right then so they were prepared and ready for the appointment. The tech said this is a known issue with the Model X and currently Tesla doesn't have a true fix for the issue, but the SC is told they are working on it. For now the resolve is to replace the parts. Below is the notes/parts Gave us a MX loaner which we took to the MN State Fair for the day. Got phone calls throughout the day on the progress of the car. When we were just leaving the fair got the call our X was ready for pickup. Those guys and gals did an awesome job! Concern: Customer: Vibration from seat between 30-36mph on harder acceleration. Pay Type: Warranty Corrections: Exterior NVH General Diagnosis Verified owners concern, reference service bulletin to replace front half shafts and jack shaft to eliminate vibration under acceleration. Corrections: Jackshaft Assembly - Front As per service bulletin replaced front jack shaft to eliminate vibration under acceleration. Corrections: Front Halfshaft Assembly - Front - LH As per service bulletin replaced front left half shaft to eliminate vibration under acceleration. Part Quantity HALF SHAFT - FRONT RIGHT (1027115-00- B) 1 HALF SHAFT - FRONT LEFT (1027111-00-B) 1 JACKSHAFT ASSY, FR (1030632-00-A) 1 WASHER SAFETY M24x39 (1020296-00-B) 2 NUT HF M24x1.5 [8.8] ZnFl-W (1020297-00- A) 2 Oil Seal (1007382-00-A) 1 Parts Replaced or Added Corrections: Front Halfshaft Assembly - Front - RH As per service bulletin replaced front right half shaft to eliminate vibration under acceleration. Performed post installation test drive and verified vibration has been eliminated.