282 Gantry lubrication points

I've recently purchased a much in need of service 282 Gantry Crane.  I've torn it completely down and started reassembly.  I'd like to confirm:

1) I should not lubricate the nylon gear/worm intersection

2) All shafts (and passages through the top of base), get light oil

3) the motor to worm shaft intersection get grease

4) Question: what about the large red cab gear, where it meets the gear coming through the top of the base?

Thanks