I have a very few spacers and cogs. ebay is a good source for open stock parts too.
the 17T small spline cog is hard to find. these are the best freewheels ever.
you might also have luck with down-spec spacers (not DA). remember that the spacers are different for 6 vs 7 speed builds
shimano diagrams in PDF format are here
https://si.shimano.com/en/manual/sea..._model=mf-7400
/markp
