Bent the four elevator tabs. Had no problems at all on these, just followed the instructions and took my time. I also realized that I forgot to deburr the lightening holes of the spars, so did this. I final drilled the tip ribs and also marked and drilled the hinge reinforcement plates on the spars. I would have gone further, but it turns out that I need a 5/8 drill bit. I have a unibit, but it only goes up to 1/2 inch. I'll pick one up tomorrow along with another can of MEK.