Yes that's right, his statement is taken on 07/08/1985. I'm not sure I'm following you here. 
Yes I agree, I don't believe the claims that her blood later becomes wet.
There is a reference to an officer describing her blood as running from her mouth, but I take that as a visual description rather than an assessment of the blood being wet or dry. I forget where that reference is now but I can dig it out if it becomes of further interest.
The photograph which appears to show wet blood, is actually a manipulated image and is a blown up, colour enhanced area of another photograph available at the original trial, i.e. I believe the wet appearance is due to the image being manipulated and recoloured rather than the blood actually being wet at the time of the photograph being taken.
Of course there was undoubtedly liquid blood retained in Sheilas mouth which could have spilled out if moved.
The Drs statement is dated 7th August 1985 and is the first statement from someone who is medically qualified to at least Dr level which provides details of the state of Sheila's blood resulting from her wounds.
As such in my opinion it must be considered as reliable and accurate as opposed to those statements which can be fogged by the passing of time. If the defence have never disputed the date of the Drs statement then, in my opinion, the Drs statement has to be considered of high value.
The Dr in his statement mentions one wound per person deceased.......... For me he appears to be consistent for all victims in effectively nominated a fatal wound with death by gun shot. The specific details for all wounds are later dealt with at the Post Mortem stage which followed.
As I see it the Dr appearing at WHF and certifying all deceased was required so things could move forward after all have been declared dead thus making WHF a crime scene. This he did within 10 minutes. The first (Nevill) being certified deceased at 8.40 am and the last (Nicholas) being certified deceased at 8.50 am.
I think it will be found the site of a fatal road traffic accident only becomes a crime scene after a person involved in that accident has been certified deceased by someone who is medically qualified to do / conduct such a certification.