2020 Rocket engine guard heat.

I also keep my GT in the mid position, and the rear shield got me too.. Had to fix that, and fast.
 
So, what size is the hex bolt? Tried a 3mm and a 4mm. Do they actually make a 3.5mm allen key? Out of my five sets there is not one 3.5mm
 
So, what size is the hex bolt? Tried a 3mm and a 4mm. Do they actually make a 3.5mm allen key? Out of my five sets there is not one 3.5mm
Its a T25 torx bit required to remove the 3 heat shields from the header. They are threadlocked so if you have not got replacement screws from Triumph, apply some High temp threadlock when reassenbling and tighten to 5Nm.