The key issue now being, that the blood (A, EAP BA, AK1, and HP2-1) from examination of the flake, was by default found on the 'outside of the silencer', not the 'inside', as claimed...
A number of questions arise, as a result of what 'David Boutflour' told the 'COLP' investigators about this 'flake of dried blood' that he had 'scraped from the end of the silencer'...
For example, (1) at what stage did he scrape the flake off the silencer? (2) was it in August or September 1985? (3) if he scraped it off in August 1985, was it before Peter Eaton handed over the first parker hale silencer to DS Jones on the 12th August? (4) following on from this, did the lab' get informed that David Boutflour had scraped a flake of dried blood off the end of the silencer? If so, or if not, why would David Boutflour be 'tampering' with the integrity of the silencer, before 'it' was handed over to police, who in turn handed 'it' over to the lab'? (5) had David Boutflour 'scraped' the flake of dried blood from the end of the silencer, before 'Ron' Cook had dismantled the same, and separated the first seven baffle plates?, and his rebuilding of the same, and subsequent submission of it to the lab' on the 30th August, 1985, (6) if not, where is 'that' flake now, what happened to it, why was this information kept from the defence during the trial?