I got exactly the same problem, after updating to firmware 3.6 (but I suspect it already happened with 3.5) display knob n. 2 (left to right) is nailed between two values and do not move, while all the others are ok. Factory reset (twice) didn't work, UI test says that knob 2 is blocked between 128 and 129 (while sporting a generic efficiency "green light"). Don't fancy to go back to previous FW and since I do treat my pedalboard as an holy relic (I mean, no impact, no dust, screen protector and lotta love...) I guess that this could/should be a software bug. Did anyone solve this problem, aside from sending pedalboard back to service centers? Many TX