where you install the screws; you can take some pictures at the end of installation
Pic attached from the test fitting. You install counter-sunk nutplates on the inboard flange of the tank and wing skins, then dimple the fairings and use counter-sunk #8 screws.
EDIT: I may have mis-understood which fairing you were talking about. Did you mean the transition fairings from the gear leg to the fuselage? Pic attached for that too. I ended up going with 3 screws for these fairings. The front hole goes through the cowl and picks up the lowest 1/4 turn fastener hole. For the rear hole, I drilled through the fuse on the curved section below the longeron and pop rivetted in a nut plate. The clecos into the gear leg fairing were filled in and not used, I just needed them during layup to hold things a little better. There's one more hole on the underside that goes through the lower skin of the fuse and into a nut plate I installed in the floor. I know a lot of people just tie the rear of the fairing together with a piece of safety wire, but I never liked the way that looked and decided to go with screws instead.
I would love to see how you line up the leg fairings so they are the same. I’m going to build my own transition fairings but getting the legs the same is not something I have figured out yet.
Gear leg fairings do the following:
Level the aircraft front/rear and left/right using the longerons as a reference.
Use plumb-bob's to drop a centerline down the airplane from nose to tail.
Drop a plumb-bob from somewhere near the top of the gear leg and measure distance to centerline.
Repeat somewhere near the bottom of the gear leg.
Put a pieces of wood vertical near the tail the same distance from the centerline as your two measurements.
Put a string around the front of the gear leg fairing and pull it back to the piece of wood, keeping it level.
Measure the distance from the string to the back of the gear leg fairing on both sides and adjust until its the same.
Checking the top and bottom of the fairing makes sure there's no twist. Van's instructions are pretty detailed about how to do this, pic attached to show my setup.
For the transition fairings, I started with a set from rvbits.com and glassed them in to the stock van's wheel pants.
First flight should hopefully be this weekend, and then I have to break in the engine. I'll be re-installing all these fairings in about a week or so once the engine break-in is complete and will take "final" install pics then. This stuff all looks much better after final sanding and a coat of primer.