Update. I've been trying to build a simple library of sounds to go with my telecaster on a cover gig (clean, bluesy overdrive, marshal-style rhythm crunch, lead and a few modulation sounds and its tougher than I though.]
One issue is that my studio monitors (or the way that my sounds are routed while monitoring, I haven't figured out which) are crap so what I hear while I'm dialing in sounds is different than what plays back when its recorded.
Since this was supposed to be a giggle preset, I've discovered that if you change amp models there is a bit of a drop out that can be avoided by using the same amp for the entire preset or by having one of the bigger devices that allows you to use multiple amp blocks (which the FM3 apparently does not do).
Believe it or not, an amp that I hate playing through in real life (a Twin Reverb) has become my favorite clean "base" tone with a Divided by 13 greenback cabinet. It's closer to my real deluxe than the deluxe reverb models in the FM3.
I originally wanted to do something with the fender clean sound and a Marshall-style amp for my crunches. I might still build that up.
@Poparad sent me some of his presets and that is how his works. Finding my actual mid-level crunch sound has been difficult, though. My pedalboard and amp sound really good for my tastes and I want to replicate that in sound as well as function as much as possible inside the box. I know it's possible, I just need to keep working at it.