This may or may not be entirely on topic but ... am sitting here reading through the skinning kit text file, playing around with buttons, knobs and slider combinations and how they display, and have noticed that there are several knobs that mention replacing certain sliders that don't seem to (exist ?).
specifically..
.. 'reverb slider', 'eq slider', 'amp slider', 'pan separation slider' .. each of which use the "slider_horiz" or "slider_vert" if their alternates knobs haven't be created.
It also seems that the 'onoff.bmp' isn't applied to the loop track button or the z-order switch. (not that it's a big deal)
If you're willing to look at these, possibly create the missing ones, maybe a reverb knob as well ... (for the sake of other skinners?) .. that'd be swell .. elsewise .. yeah .. (thinking in text again) .. thanks for the excellent work.