BVM Super (Balsa) Bandit
Then do the same sanding / grinding work on the inlet. Note that it's important to get this cleaned up all the way around - even though the far side (close to the fuselage side) is a little awkward to get to if you're using a file or sandpaper, you should take the time to get it cleaned up properly - not just for parts fit, but also for proper epoxy adhesion once the part is glued in place.