In my opinion, the shotgun approach in denying everything that has been presented and only using cherry picked snippets which could be useful will not do Jeremy any favours in the long run. Any credibility that exists will be / is being eroded / diminished.
I said exactly the same thing myself recently (and posted on here).
It undermines a few of the more credible points that the defence should go 'all in' on.
Namely the 'discovery' of the silencer - and the Boutflours high familiarity with guns (more so than the police themselves) (excluding firearms team)
Mugford's testimony, and more to the point the 1 month delay.
Lack on ballastic evidence to prove silencer was used (it all stems from the assumption the 'find' was genuine)