From my friend's Instruction Manual:
T27 Hinges (2 x castings)
T28 Rams (2 x castings)
E11 Brackets (2 x brass etchings)
E12 Port tab (Brass etching)
E13 Starboard tab (Brass etching)
There should be no problem with the castings but you may have to buy a whole sheet of brass etchings to get the ones you need. That could be very expensive, even if Slipway will sell you one at cost.
Dave M