they had no reason to touch the silencer its called tampering with evidence witch is a crime in itself.
I agree. I am not saying that something was done to the silencer by the relatives, I have no idea, but the mere fact that it was NOT found by the EP, but by a relative who had something to gain by a conviction of Jeremy, and that they had it in their possession (why did they not leave it where they found it, and immediately inform the police about it, so a crime scene technician could handle it from that point?)
By the sound of the statements it was fidgeted with by numerous hands until it came into possession of the EP.
I am not sure such evidence could be used in a trial today.