sounds like you are doing it all wrong.
I have a Gen 2 and posted stuff in your other thread.
Also... get proper tools... those fold out tool pocket knife like sets are gimmicks.
I bought a socket set of hex drivers - from 3mm to 19mm hex.
fit them to 1/4 and 3/8 extentions/wrenches and much better than allen keys when working on the bike.
Pretty much most Fuel Injected bikes have throttle adjusting screw is the same place.... My Yamaha Super Tenere is the same.
I can't remember if the motion pro tool fits our screw heads.
I have tried to use it but it is too fiddly and not enough room with the tank on to get all the hoses on and off.
once the tanks is propped up and off to the side and airbox off it is easier to adjust TB with a small flat screwdriver.
When using the motion pro screw driver the outer case for the tip is notched so you can see how to hook the tip onto the adjustment port. you then have to push the handle so that the flat screwdriver moves out tip and engages the screw head. lightly turn the handle so that the blade pops into the screw slot then you have be gentle when turning to adjust the screw.
Biggest issue for me is you cannot see if it is working and you loose the feeling in you finger of blade and slot engagement etc.
Also treat this time to check airfilter and spark plugs as you are there anyway.