You can actually do it yourself without the special tool. BTW, there are actually 2 adjustments that need to be made to ensure all is well.
Shift the transmission to neutral. Make sure the trans is actually in N and (at this time) disregard whether the shifter in the cabin indicates N or not. Set park brake, etc. and turn off engine
Remove the fastener that connects shift cable to trans shift arm. Remove trans shift arm. BE SURE the trans stays in N !
On top of the MLPS, there is an alignment mark for Neutral. Adjust MLPS as needed to make the alignment mark line up as it should.
Reinstall trans shift arm.
Position shifter in the cabin to N. Reconnect shift cable to arm, ensuring that both trans stays in N and that shifter stays positioned in N.
Enjoy!