Hi Sternone! I flew the plane after you. Also had a flat battery, also needed the tech guy to start it up after backfiring. Altough the tech guy also told me (which I did not know and was never told by the instructors) to wait at least 10 seconds between priming and starting the engine (although sometimes it feels like it takes me at least 10 seconds just to lock the primer after using it
). So, as someone mentioned in a post, it should be a memory list rather than a "do" list. Have you flown the plane since? more worrying was that roll/yaw tendency of the plane...
Merry Christmas!