compleated step 1-6the only problem was I riveted all the 426 3-3.5 across the frount spar of the right elevator. Getting into a pattern. After finishing the left elevator.I was to leave out 9 rivits from the bottom/ top skin near the counter balance rib so I could get in side to buck the 6 470ad4-4 6 places and the top two rivist from the e1001 top skin with 426 3-4 and place the blind rivits on the bottom. So I had to drill out the 9 from the bottom. Not a big problem just a little slow down.