I haven't had time to dig into this at all, but I think this should have been straightforward and unfortunately it wasn't. I got the Helix Rack. Love the device, its primary use is for my home recording studio. In fact the device is so useful that I actually process everything through it now, bass/synth/vocals/guitar/samples. For what it's worth, adding a touch of tube-based outboard compressor after the helix sounds fantastic when recorded, the Helix is an outstanding source. Anyway, I decided to go all in and get the controller. I plugged it in via the provided cat 5 cable, turned it on, the scribble strips showed my bank/patch names, etc. Question 1: what is "customizable" about the scribble strips? Don't they just show whatever you called the patch? Then I went to edit what is a fairly straightforward patch. Distortion->EQ->Head->Cab->Delay-Reverb->EQ. No parallel path, etc, just one straight line. (BTW the separation of head/pre from cab, and the ability to move around the mic freely, is fantastic. Six inches away pulls all the shrill right out of the recorded signal and sounds very natural). It looked like I had one block left, and since I could build this model easily enough on my PODHD500, I figured I couldn't possibly have capped DSP. So I went to add a volume pedal. When I pushed the knob to get to the model list, the list displayed, but was sort of in what appeared to be a "disabled" mode. The text was not as bright as usual, etc. I could edit all the other blocks. But I could not add another one. I could move blocks around and all that. But I simply couldn't add another block, the model screen was always sort of "disabled". Question 2: what creates this "disabled" condition? Related somewhat is the expression pedal inputs on the controller. Question 3: What is the difference between the three expression pedal inputs, and the "toe switch" one? Is there some kind of expression pedal that has a toe switch or something? Thanks for any pointers etc. I did try and find these answers elsewhere but had no luck.