Disregard my last comment, I figured it out thankfully.
To anybody else with my issue: There are only 3 types of screws total in the device. There are the tri-wings on the back, short silver screws inside, and long silver screws inside. The joystick uses the long silver screws, and the preview images for this product have a diagram showing what screws go where (note their “long black screw” is originally the tri-wings): https://www.gamingcobra.com/products/18p...
Can you please post a super-close-up of the two 3.5 mm Phillips #00 screws in step 11 (preferably while they are outside of the joycon)? I am having an absolutely horrible time getting them back in and have a feeling that I got some screws mixed up. It is absolutely the most frustrating thing I’ve had to deal with all year.
Actually a side-by-side of all the screws in the device with clear labels on where they go would be godlike. I am begging you; I can’t reassemble anything at all at this rate and have about a trillion loose parts scattered around my workstation.