Like many before me, I'm starting with the Vertical Stabilizer (VS). It has the least amount of parts, least amount of time and goes together easily... Plus, if i happen to FUBAR somthing, it won't cost a forture to replace. I was concerned about a bow in the VS spar reinforcement (vs808pp), but after consulting VAF, I found that this is normal & I gently bent it strait bending over the edge of my work bench. Non-issue.