Hammond XK-3c - Internal Leslie Parameters

[lawman]

I have a Hammond XK-3c and I'm having trouble adjusting the internal Leslie sim parameters - the changes I make do not persist after I turn the organ off. I have heard that I'm supposed to "record the parameters to the Cabinet type," but I'm embarrassed to admit that I don't know what that means. Do I find the Cabinet type (which is easy) and then save it, somehow(?), before adjusting other Leslie parameters? Or do I treat the Cabinet type as just another parameter, however one that must always be reset (first) whenever I reset other Leslie parameters, then save everything to a Combination Preset? (I don't have this problem with other parameters such as Reverb, Click, etc.)
Thanks.