No luck getting an answer in the tandem section so I'll ask here.

Campagnolo shifters, Campagnolo RD, but no campagnolo freehub. I have a Chris king tandem wheelset so switching freehubs(or driveshells as CK calls them)is out of the question. I have an orphaned set of 9speed campy cassette spacers, would I run into problems using a Miche shimano cassette with the campy spacers? If I'm not mistaken, Campy cogs are of a different width so even if I use campy spacers the spacing will be off, right?

tl;dr:help me build a 9 speed Campagnolo conversion cassette to use on a shimano hub.

Thanks.

Ps: Don't suggest using a Jtek, that's my last resort.