got five minute's at work today so made so small carbon fibre inserts of the battery slots fit nice and flush under nether but are just proud inside the tub ( about 0.3mm )
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i made four extra long lengths ( which make 7 or 8 bits each )
so I'm putting them up for sale at 8 pounds posted a length
you just need to cut them down to 44mm long
i couldn't do this at work, i just cut my one with a cutting disk on a dremal
give us a pm if your interested