I saw video by CARCYCLES on how to fix that stuck up or unsmooth shifting you get on the 1st and 2nd gear.
After testing it out, I find it to be a great hack and suggest you do the same on your G86 or BRZ.

Tools:
- Pry Tool
- Screw Driver
- 10mm Wrench
Optional:
- Masking Tape

@carcycles YT Channel:
   / @carcycles  
DIY Video:
   • 【1速2速が入らない!】86/GR86/BRZのシフトの入りづらさはこの調...