Translate: "I have just acquired all the parts as well as the assembly instructions from an individual, but after a few hours of assembly, I realize that it is often necessary to go back, disassemble and reassemble and arrived at page 1027 of the pdf file, I gave up as this assembly is complicated, does anyone have an update to offer me"
Disassemble and reassemble is a feature of this build!
The version of the instructions I have total 1493 pages
Page 1027 (1029 in mine) is instruction 165. Installing the 'U build section' in front of the engine bulk frame. I remember this being hard to install. The 2 side fins had to come off. Perhaps also some more parts removed. Then it could be slipped up and in.
https://imgur.com/ToXeaTU