Another thing I noticed is tha NM said he made two journeys with JI and KD to the shed (ETA or two trips on foot fill up the van)that night but then the next day went back to he shed to add a rucksack
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That made me wonder what was in the rucksack, why did he take it separately and where was it when police searched.
that's why I think they hadn't done the clean up yet when the police were coming back to search first thing, and they probably stayed up all night to sanitise the bathroom after the collection.
Yes, sounds like he/they were pushed for time to finish the clean out. It seems the rucksack contained items that got "contaminated" in the dismemberment process. I can't find anything to say whether the rucksack was taken to BC before or after the police visit on the morning of 24th Feb. They did say that it was impossible to do a proper search of CML that day due to the vast amount of clutter so I guess it's possible the rucksack was still in the house when the police went round.
He/they still didn't get rid of the boot liner or stun guns though. We only have NMs word for the fact that he took a "kidnap kit" with him to CH on the 19th. If the handcuffs hadn't been in that rucksack, I might be inclined to discount the kidnap story altogether. And if the "kidnap kit" is real, why not dispose of the stun gun as well as the handcuffs?