My MCU (the big center touchscreen) has bubbles and is leaking goop out of the bottom. Thanks to these forums I discovered this a known problem and requires a touchscreen replacement. I made an appointment on Jan 5th to bring my car in on Jan 18th. I described the problem and the service advisor on the phone agreed a new MCU was needed. She said they'll order the part now and it will available for installation at the Palo Alto service center when I come it. I should have known better. 24 hours before my appointment my Palo Alto service rep called and said "I just read the service note. We have no MCU's in stock and we called around and don't know when we can get any. It could be a couple of days or a couple of weeks. We have other cars in the lot waiting for MCU's." I guess I should be grateful that called me before I brought the car in. However, after ~5 years of owning a Tesla I still can't figure out: Is this a systems problem - i.e. the central service group responsible for scheduling isn't delivering details of parts needed for appointments to the local service center? Is Palo Alto still so swamped that their service advisors simply don't read the notes about the appointments until the night before? Why isn't this getting better? Frustrated.