There is a thread on here somewhere from someone already cut the FCB to remove the pedals and used their own. It makes the FCB a smaller footprint. They also included a picture of their modification.
I think you should send @Lokasenna a PM.
IIRC He was the ONE who modded his FCB.
If you know how to solder guitar pickups and that kind of thing, it's easy as hell.
Inside the FCB, the pedals are attached to a tiny circuit board with an optical sensor, and then three wires run from there back to the main board. If you cut the wires off from the tiny board, you can solder them to the tip/ring/sleeve of a stereo 1/4" jack1, mount the jack on the FCB2, and then plug in your own pedals3.
1 Sadly I don't remember which wire goes to which part. It's easy enough to try the different combinations, and you won't break the FCB. It will either work properly, not boot up at all, or the pedal will work backwards.
2 I removed the board that holds the FCB's external footswitch jacks, since they're useless with the Uno4Kemper chip, and put my pedal jacks in the existing holes.
3 I have Mission Engineering's EP and SP pedals, and they're perfect for this, but I think most pedals should work just fine. Just remember to do the FCB's pedal calibration with them.
Thanks for your short run- thru, Lokasenna! 
Lokasenna,
Thanks for the info , I'm just getting ready to do just this
For bonus points, take the whole thing apart and cut the end with the pedals right off like this guy: https://dl.dropboxusercontent.com/u/7231524/FCB1010 Radical Mod.pdf
And then rewire it so you can remove the power transformer and run the whole thing off a single 7-pin MIDI cable.
That is really a nice job, I just don't have the balls to do that to mine.
Display MoreIf you know how to solder guitar pickups and that kind of thing, it's easy as hell.
Inside the FCB, the pedals are attached to a tiny circuit board with an optical sensor, and then three wires run from there back to the main board. If you cut the wires off from the tiny board, you can solder them to the tip/ring/sleeve of a stereo 1/4" jack1, mount the jack on the FCB2, and then plug in your own pedals3.
1 Sadly I don't remember which wire goes to which part. It's easy enough to try the different combinations, and you won't break the FCB. It will either work properly, not boot up at all, or the pedal will work backwards.
2 I removed the board that holds the FCB's external footswitch jacks, since they're useless with the Uno4Kemper chip, and put my pedal jacks in the existing holes.
3 I have Mission Engineering's EP and SP pedals, and they're perfect for this, but I think most pedals should work just fine. Just remember to do the FCB's pedal calibration with them.
Considering doing a version of this mod but a few questions I'm hoping you can help with..
Will passive pedals like DVP3 work this way without actual audio signal going through ? Seems the mission pedals come both ways? Ideally I would like to do this in a manner that allows me to upgrade to remote later and still use these pedals and put back fcb. So,I would like to mount to the fcb.. Any pics with pedal tops removed ?reccomendations between mission Anne dvp for these specific purpose .
Really like the idea of passive if they will work since the fcb is running phantom 1 cable already it would be much simpler
Yes, this is for normal passive pedals.
You can remove the FCB's pedals and keep the parts, so you can put them back on later if you want. You'll just have to re-solder the wires, or solder new wires on, or use some sort of quick-connect for them.
I don't have much in the way of pictures, sorry.
thanks lokasenna
