Today I started preparing my fuel tank. I followed the instruction sheet provided by Sonex. First I ran the required drill bits into the holes then I used the NPT taps to clean up the threads. The taps don’t appear to go all the way to the bottom of the thread or touch the plastic. After cleaning up the gas tank I though about ways to clean out the tank. I’ll have to think about this again closer to installing the tank. I next started to work on the glare shield by upsizing and dimpling the holes joining the two pieces of my custom glare shield.