Planning: Need to get the pitot mast figured out before I can button if the bottom skin. Apparently the Gretz mount t that most people seem to have used is no longer available so I bought the blue anodized Avery mast from Aircraft Spruce. Previous versions of this mast had weld problems, but I believe they have been addressed. The mast looks good. The installation instructions don't seem very stout though and I'm going to add an angle bracket to the adjacent rib to stiffen it up. That means I need to mount it next to a rib with the web on the correct side. I've decided to mount in the bay just outboard if the aileron bellcrank. The heater box will mount in the same bay as the bel tank but in the outboard rib; it allows for pretty clean wiring with no chance of interference with the aileron pushrods.
Used the template provided in the instructions to mark the cut out in the skin. First clamped the mast in place where I think it will go. Used a sharpie to mark holes through the spar to confirm edge distances. Then slid the template over the mast and taped it to the leading edge skin. Then removed the mast and cleco'd the bottom skin in place, then traced the template into the skin.
I think I'm going to chrome plate the mast once everything is fit up and drilled. Will look pretty sweet.