So what I did was go to MBII, open the jamp config file, and pasted
set walk "cl_run 0; bind SHIFT vstr run"
set run "cl_run 1; bind SHIFT vstr walk"
bind SHIFT "vstr walk"
/bind shift cl_run !
At first it works, tapping shift switches it between running and walking, but then the next time I boot my game, shift is no longer even the button to walk/run, help please.