Hey guys, I'm coming up on my ninth month with this fantastic beast, but I have never used the built-in expression pedal. It has always been rough, stiff and useless. A lot of people have told to use a hex key on the right side of the Helix, but every time I have done that, it only seems to move the expression pedal the way that I turn it, not loosening or tightening it. Is there any way to do get around this? I could always try being rougher, but I do not want to wreck this amazing board. Thanks in advance.