As previously noted, PFS had to install a new camshaft in the test-platform Sundowner. When they got into the engine, they realized it needed complete overhaul. That was a time setback, and may have impacted their ability to make announcements at AirVenture (as they had originally planned). They have now resumed test flying for both the exhaust and the wheel pants, and are still planning to attend BAC Fest in Wichita. There is no further info available as yet, as heavy test flying will be taking place from now until BAC Fest.