Uh, if you've gotten the Cuprino then yes you missed them, you get those right at the start almost. You need to talk to the girl that's standing outside at the first little place you start at. She shows you how to use them and gives you a few and then you can buy them off the vendor there as well. I think you get the schematic then too or can buy it from him, can't recall but I know you get them then as I did.
D'oh! Yeah, I know she gives you the mini-game and the you get a stack, but I was looking for the schematic.. I think my 'bugs' rage got the best of me... yeah I'll definitely be restarting the game tonight, going much more RPG'ing instead of RAGE'ing!.. heh (didn't see a schematic from her though, OR the guy in Haggar Territory... Grrr....
Rainbow Samurai - Thanks, I haven't checked there.