hi agent l noticed that another member has sent you drawings and construction book l too have all the original drawings 4 sheets the consruction manual and a 4 page list of parts called order no 1076 also have a copy of the extra items available list. All from the year 1992. If l can be of help give me a shout Robbe went skint in the early 2020,s there are very few spares left its a great deal make match or mend.
the main mast and jib l needed to replace l just sat in front of the computer and went through all the model part supplies till l found someone who had them in stock. If you need sails then Frank at Nylet have never disappointed me very experienced chap.
I noticed the crack on the keel to hull l had the same thing l rubbed i down made sure that their were no cracks in the hull filled all the dents with a flexible car body filler and then gave it a good few layers of under coat then resprayed it in the original yellow. ???
Its a lovely boat to sail but a bit of a bruiser on the pond 13 odd kilo,s moving at fair rate not a lot gets in the way. good luck on your rebuild