[Closed] bodgeing casettes like in the old days

ok here we go Ebike content

my Trek has the sram EX 1 drivetrain  it is 20 months and about 1000 miles ish

the hugely expensive cassette has started to act up mostly on the middle cog which I guess i must use lots .

now I dont want to spend £350 th £400 on a new cassette when 6 of the eight cogs are still in good nick .

30 years ago we used to split cassettes and pop in new or old cogs to make do and mend .

I have seen a sram 8 speed cassette on wiggle for £15 so wondered if it was splitable and worth a try to bodge up the EX 1 cassette

so will the cogs fit the freewheel. I guess I wont die doing it  and if it fails then I have only wasted 15 quid