I've started experimenting with masters, variations, and instances in Fontlab7, and ran into trouble almost immediately.
To get two masters to play with, I used the "bold" effect on one of my fonts.
But when I use the matchmaker tool, I see a spiderweb of mismatched nodes. I realized the bold effect created different (and at times nonsensical) nodes. I thought the bold effect would just move the existing nodes around.
Is this because I have some kind of grid fitting setting turned on, perhaps? Or are my curves no good? Or are the effects not really suitable for this?