Bluetooth is in both
Yes. Microphone ports, charging connections, etc are mirrored from right or left buds.
Dental Floss (doubled up) approached worked well for me also. I only used the adhesive remover to clean up the old glue left behind. I used cotton swabs soaked with the adhesive remover for the clean up. I followed steps 1 -4 and skipped ahead to step 34 and then skipped to step 55.