I recently installed the Givi's, too
Yes, you need supplementary leverage on the Allen key, because of the locktite.
When you put the new bolts in, Loctite them in place, too.
MAKE SURE your wind them backwards until they pick up the original thread, otherwise you will cross-thread them and have a major problem.
Do one side at a time, as per the instructions.
I needed to put a lock washer between the spacer and the bar where the two meet under the radiator, as there would have other wise have been too much play and vibration.
All up, about 1 HR 20MIN install time.
DL1K , fettled.