Hi, I’m also a fan of artillery kits (artillery only) and I have a real obsession with the super detail. I also have this kit (K81/2) or all that is needed to create this kit. I have only one suggestion which I will express to you in an absolutely friendly way, that is to try to replace the plastic barrel with a metal one, because fortunately it exists and I believe it is produced by Aber, I own it but I don’t know if I have kept the case for references exact.
For the rest, great achievement!
The construction you are doing is very good, I really like the 12.8cm artillery pieces. I have a model of the K81/1 from Azimut Productions, to assemble and then I would like to make this model that you are building, so I am going to follow its progress.
Very neat assembly, very good work.
I also ask you, if possible, to share the photos you have obtained of this cannon, I have searched the web and I did not find many period photos (WWII).
Regarding using a glue dispenser, I use a sewing needle with the eyelet cut in half and if you have different needles (different sizes), you have different sizes of dispensers. If you don’t understand it, I’ll upload a photo later.