I needed to build a couple of the short power pods. There is a small oval hole just behind the firewall. My thought is that it is there in case you want to pass wires through to connect to the battery. Found a neat way to make the hole. Logan FoamWerks makes several products for cutting foam board. I used the medium sized hole cutter. Worked out really nice. Buy at Amazon.
My first FliteTest build is an Old Speedster. I bought the speed build kit. The top half of the fuselage is white poster board. Decided that I would prefer black, so I traced the white parts from the kit onto black poster board. Simple enough. The only problem was making 1/8″ diameter holes to slip over the bamboo skewers sticking out of the front where the powerpod slips on. Found these Fiskars 1/8″ single hole punch online at both Amazon and eBay. Made for a neat build.