Hi and you are doing a nice job considering the almost total lack of any use-able instructions.
Congratulations on your determined approach (I would have thrown the towel in long ago, and would not touch a Billings kit now .
However it may be helpful for you to look at the photographs on this website http://www.nationalhistoricships.org.uk/register/234/will I know they are fairly modern but it would give you a good idea of the answers you need. Particularly re. the davits etc.around the stern, note also the chain linkage from the steering gear to the rudder stock.
Meanwhile all the best, keep plugging steadily away and remember, it is a hobby not a race. Stay well and enjoy the journey.
Kind regards from Rob in Oxfordshire (UK)