i've probably been spoilt by balsa USA photo instruction booklets.
I don't recall any problems building the Boddington CI or the Vimy for that matter. Not really criticising the 'vagueness' as such, it's quite satisfying to solve the problems. But i think you can see what is ' obvious' to one builder is not to the other. I'm enjoying making the rear gun using the instruction on the plan. Yet 'double brass bell crank' is shown for elevator. I've never done one of these so would have liked some more info (similar to how to make the gun) Thinking using carbon fibre rod and blue and big epoxy horn on (rather than brass to save weight aft)