I managed to get the scribing done in 1 hour snippets over the last two days. To do the access doors, I did not have a template of the right size and shape so decided to make my own from a beer can. I scaled up from what looked like a reasonably accurate profile in Hitchcock's book and drew the access door on the material cut from the can.
Next, I drilled holed in the corners, starting small and using progressively larger bit until I got to the edges. The holes were fine-tuned with a file.
Then I cut the remaining material out using an x-acto blade, made some marks for placement, and taped the template to the model.
The access door was completed and then all the other little details were added around it using scribing templates that I have. This picture was taken after sanding down the edges and a bit of touch up will be needed on this wing.
The other wing turned out a bit better.
With that now done, except for a bit of touch-up, I can get on with the painting, but not til Sunday.