I just started on my empennage for the RV-7 and have a question that is probably pretty stupid. Does it matter which way you put a standard rivet in? In other words, does it matter which side the shop head is on? I noticed a picture on the forum of a piece similar to what I have already done and noticed that the rivets where opposite of what I had done. I didn?t recall any direction from Van's in there manual so I'm hoping it doesn?t matter, but if it does now would be a good time to find out.