I totally agree with your assessment of the dynaflite super decathlon kit.
I am in to the second year of building because of all the errors in the plans & instruction book.
I have re desighned a lot of the kit & replaced a lot of bsd wood. Dynaflite did replace some missing parts.
I am down to finishing the top cowl & bottom fuse formers.
Cant find the tail wheel mounting parts will have to guess what the plans show.
I only hope what i end up with fly's well. As this will probably be my last airplane build as i am 88 1/2 years old. Well keep em flyin they say! Frankie g trainermaster80