Requiring use of Repair Kit L for the 18th faction assignment seems a bit ridiculous. How about requiring use of any repair kit. Repair kit L is a Tier 1 item and by they time you’ve completed 17 faction assignments you are well into Tier 2. This is required for both the 18th Jericho and Federation assignments.
Repair kit L is available in every tier.
Why there it is…so sorry…would delete this thread if I could…had looked around and saw a bunch of other letters…then got a Tier 1 L and thought “oh my”. Tried googling and checking the wiki to no avail. Thanks for the education.
Don’t worry, it happens 
Ill close the thread since you got it solved.