IMHO: The rubbing alcohol is clutch for this step. There’s plenty of residue after pulling up the old adhesive and the 99% Isopropyl Alcohol really took the tacky remnants off.
OMG, whatever you do don’t let that orange cable in the back get disconnected, It’s a complete PIA to reattach. I attempted to dislodge the black chassis in Step 9 hoping that it would give me a little more “slack” to reattach the orange cable and I ended up destroying my mouse. The black chassis is glued down and when I used my SlyPry on it I inadvertently cut through the sensors. Watch out because that orange cable can trip you up.
