Having started from a fresh kit, the first weekend of time I spent with Tornado was making some basic assembly decisions, and then getting started on the mainframe.
Given the kit’s design, the consensus of advice was to assemble it without the aid of a chassis jig. It is very carefully designed to fold up square and true. This seemed reasonable, but I certainly felt a bit wary getting started.
So far, the chassis seems to roll well as an 0-6-0, so the advice was sound!
After a weekend’s work I had:
So far, assembled exactly as the excellent instructions suggested.