Don't be disheartened John, unlike most plastic kits where the bits usually fit together nicely, larger model boat kits are en entirely different ball game. Quality can differ considerably between manufacturers and even within the range of a single manufacturer. Common problems, as you have discovered, can include inconsistency between drawings and kit contents, poor quality materials and fittings and incomprehensible instructions. Some Billings kits are known to suffer from several of these faults and are perhaps not the best choice for a beginner but of course if they are the only manufacturer who offer the particular subject you want then you have no choice.
Kits are frequently not entirely true to scale due to compromises made by the manufacturer to keep costs down, simplify the manufacturing process or enhance practical performance.
If you want a 100% accurate (or near 100%) then you need to scratch build from accurate drawings. There are a vast range of plans available to meet all skill levels although the lower the skill level the less accurate the plan is likely to be. But if course the plan, whether highly or less detailed, will only reflect the vessel at a particular time which is a frequent cause of headaches for warship builders.
In the case of a subject like Bluenose II, the original vessel will have been significantly modified over its lifetime for practical reasons so unless a kit is periodically updated it will fall off in accuracy for this reason as well.
On a positive note, the kit I am currently building as a review model for the magazine is fisrt class in terms of instructions, quality of materials etc. and is going together very well indeed. Some minor compromises have been made to ease construction and enhance performance but they are unnoticeable when the model is on the water.
Once you have signed off on Bluenose II give us some idea in general terms of what you might be interested in building next and we will be very happy to give you unbiased advice.
Colin