Join Date: Aug 2017
Location: Melbourne - Australia
What he ^ said.
Push the grip fully home (screws loosened), set the correct angle (brake lever down to your liking).
Gently tighten the screws just finger tight and then wiggle the switch block to make a mark on the bottom of the bar.
Take it all apart, find the scratch mark, drill a 5mm hole, clean away the swarf, fit everything and you're done.