6 or 7sp freewheel with 9 or 10sp derailleur?

That's shimano cheapest road groupset you're talking about that doesn't even have a name, just brunch of numbers I can't remember.

I'm not sure you're right - they're quite old and bought from ebay. In any case, they do the job - do find that they hurt my hands after about 60 miles - but then I unfortunately seem to have "campagnolo hands" - a rare and disproportionately expensive condition.