Description, paragraph 2: "two-bladed wooden propellers..." (The Specifications section states 3-bladed.)
The first two have 2 bladed props, but the next pair have three-bladed ones. Clarified.
Description, paragraph 2: "Ostric believes..." (Please use full name. Not everyone will open note 1 and read "Aviation historian Sime Ostric". For the main article, "Aviation historian Sime Ostric" would be nice.)
Description, paragraph 3: While visualizing the armament layout, I got confused about "dorsal" (back, upper) and "ventral" (front, lower). It says twin-mounts in (1) upper nose and (2) between wing and tail, which are well-described, and a single ventral mount. Later, the observer is mentioned manning the "belly gun". Why not call it belly gun instead of ventral?
Description, paragraph 4: "added to fuselage" (added to the fuselage)
Operational history, paragraph 2: Earlier in the article, it refers to the "Do Ys". Then the form "Do Y's" is used. I understand that using "Do Yms" would be extremely awkward, and best avoided. I think there may be an exception for using apostrophe s after acronyms and jargon for plurals. If you can find the rule somewhere, let me know. Whatever form is used, it must be consistent. (Suggestion: Continue using "Do Ys" and when referring to Do Ym, use "The two Do Ym aircraft" or "Do Ym variants".)