very nice work martin, i pretty much did similar to you on the interior framwork and such but i am not as far along with the build.i like how you made the observer seat. you did great job to make the engine conversion. i think i am going to cast a copy of the engine from my techmod freidrichshafen and follow similar to what red baron did on his ff33e build. you will have a great model when you finish.
p.s. i am sorry i have not forgotten about sending you the instruction for w-29 i just been busy. i will do it someday soon.