yo beachy,
do you know any other cats locally with a model 3 or other tesla? if you dont and you want to meet up and compare notes on these cars, holla at me.
i saw one other cat on here a couple months ago who posted similar issues in that the car would not stay in the center and would hug the left line a bit. not sure what he did to fix it or if it was ever corrected, but I wanted to say there may be some other forum members here who have experienced similar.
anyway, seems like you have an appointment with a ranger. just chill on using FSD until they have had a chance to smoke it over.
if you feel like it, you can reboot the MCU and see if that may help or do a full power off of the car. this involves sitting in the driver's seat, all doors and windows closed. press the OFF button on the screen in the settings (i forget which screen its on) and sitting there patientlyyyyyyyyy for about 3 minutes - dont touch anything, dont press the brakes/accelerator, dont pass go dont collect 200 dollas. just sit there like your wife put you in timeout to think about your actions..
then after 3 minutes press the brake pedal to wake that joker up and see if that may help. it may not, but its free and worth 5 minutes of your time...
keep the class posted mate!