Trimmed the blue plastic with the soldering iron. Performed all fabrication steps on pages 22-02, 22-03 and 22-04. Be carefull with the unibit at 22-02 step 14. The bit wants to wander away from the underlying angle. I used some side pressure to correct this. If I could do it over I would first drill the hole in the firewall with the unibit and thereafter I would do the angle with a bandsaw/file.
All parts deburred. Deburred the firewall with a dremel and cutting disc.