Originally Posted by Chris Cooper
Page 25-05 shows AN3-13A for all the bolts but the outer seems too short i.e. there are no to little thread left showing.
I wondered the same thing here but decided that it's still by the book with ~2 threads showing. AN3-14A is probably closer to ideal, perhaps with an extra washer as mentioned above, but the -13A clearly has plenty of shaft inside that massive spar carry-through. You might try a thin washer if yours are borderline. Also double-check all deburring on the opposite end.
It would be interesting to see a photo from a quickbuild, curious if they stuck to the plans or used longer bolts.