I'm curious if someone else might have had to make this choice. My recently purchased 2013 MS with 35K, makes a single clunk/thump when the accelerator is pressed from a standstill position. It sounds like something is being engaged if I had to explain the sound. Doesn't make this noise whatsoever while pressed for more power while driving the car high or crawl speed once the car is moving. This happens whether the accelerator is pushed quickly or slowly. I have MCU2 upgrade scheduled later this month and was going to see if SC can lubricate the halfshafts. Reading online someone mentioned that lubricating the halfshafts has resolved this sound from a standstill position. SC gave me a quote for $225 for diagnosis or $225 for lubricating all halfshafts hubs. Just not sure what option to take at this moment. Part of me is saying go with lubricating all halfshafts hubs and hope that was it. Was hoping to hear back from others that might had to make this choice on similiar concern. Thanks in advance.