Large toroid on the bottom is for the VFO.
For me, having a good magnifier was key to good winding and properly
adjusting the spacing of windings, especially on the VFO toroid, which
has 60 turns of #28 enamel wire. I used a small plastic probe to make
spacing adjustments.
Next step: installation of toroids.
After that: installation of the unit's controls, connectors and panels.
Then: final assembly, tuning & testing.