I Can't recommend these enough for that fiddly type of flush or near flush cut..
https://www.carbatec.com.au/handtool...sh-cutting-saw
Edit: How did you go with the soft spot?
FrankenLab
Hand crafting guitars, because Death Rays are expensive.
MMM nice and smooth. Great job!
FrankenLab
Hand crafting guitars, because Death Rays are expensive.