Think about the 'tall story' told by Robert Boutflour, PI 'Bob' Miller, D's 'Stan' Jones, DI 'Ron' Cook, and 'Glynis Howard', who all provide input to 'that' earlier alleged handing over of the 'first' silencer to cops by Peter Eaton?
'It' goes to the lab' on the 13th August, 1985 ( we are told), and 'Glynis Howard' inspects it, then returns 'it' back into 'Ron' Cooks possession, but Cook doesn't seek to place 'that' silencer into storage as he 'should' have done. Oh, no...
Cook decides to keep the said silencer in his jacket pocket, not for one day, or two days, or three days or four days, not for five days, not for six days, or seven days or eight days, not for nine days or ten days, not for eleven days or twelve days, or thirteen days or fourteen days, on and on until we come to the 30th August, 1985, when finally, 'Ron' Cook does the decent thing by sending 'that' silencer to the lab' on 'that' date, 17 days after 'Glynis Howard' handed 'it' back to him (allegedly, on the 13th August, 1985). In all 'that' time, 'Ron' Cook has been carrying 'that' silencer around in his jacket pocket ( between the 13th August and the 30th August, 1985). This is the person who admittedly by his own account did not wear gloves when he handled the bloodstained rifle by ' removing it' from Sheila's body, handing it to PI Montgomery to supposedly make it safe, before he himself (Cook) placed the rifle at the main bedroom window (if you believe 'that' version of events). We are not told whether Montgomery was wearing gloves when Cook handed him the rifle to make it safe, before Cook himself retook possession of the rifle in his 'ungloved' hands and he placed it at the bedroom window...
Bearing in mind, that 'Ron' Cook admits to it being 'he' who had moved the 'bloodstained' right hand of Sheila off the gun, so that PC Bird could photograph bloodied finger / hand marks on the front lower right part of Sheila's nightdress...
Why on earth, did the lab' accept the silencer from Cook on the 30th August, 1985, when it had clearly been at a very high risk of having been contaminated with blood, via the direct handling and carrying of 'it' in 'Ron' Cooks jacket pocket for around 17 days and nights, too and fro, between the police station and the scene?