A short install video of a genuine Subaru STI shift knob. It took two hands to "break" the seal on the oem one and get it to start turning. Resist the urge to use tools on it as you'll likely tear or rip the leather - just keep twisting: Lefty loosey, righty tighty.
It took 17 full rotations to remove the original one and 17 full rotations to install the new shift knob . *Rotations may vary depending upon your model year."