There are issues which lend themselves to scale which are not exactly worth the price of correction at the size of model you are building. I would consider a 1/5th and above subject needing more fidelity to scale than what is being portrayed in your scale project. As a judge I would cast off the slope documented in a series of photos below because it is difficult to see from 15 feet away.

There is a desidely pronounced slope to the backbone of the A36 which is not the case in other airframes of the NA family developed over a very short period of time. Below is a photo to document that fact. Its not in one's best interest to follow down the narrow pathway in persuit of the documentation beyond this photo to assert that this in fact is the case. A photo serves to prove it without further investigation.

Below is the pronounced slope of the A36 backbone...

Additional documentation in support of enhanced slope of A36 backbone.