i made a fuel tank for the albatros d.1 thru d.iii series, mabe easier to just cast resin rather than print as there is not much detail it these parts. the problem is that the whole engine compartment is simplified so its just a top half of the tank to stick on top of the engine mount frame as in the above photo. making one for a d.v/dva would be easy too. problem is that the walls have to be so thick to be injection molded so everthing inside is made smaller to fit.its an age old problem,the smaller the scale the more out of scale the walls of the craft are.