Try this.... pick a factory style.
Go to mixing console. Keep tapping it until you see the style tracks. Change the sound in several of the tracks or just one to try this. Play it so you hear the difference. Now, hit the "function" button and select "digital record" tab. Now select "style creator". Now use the tab to the right button and select the tab called "assembly". Here you will see a save tab in the screen. Select "save"(j) then you will see the "save"(6) at the bottom of the screen. The name of the currently selected preset style will be in the bottom of the screen. You don't have to change the name for the new sounds to be saved with this user style.You can change it if you like. Next press "ok" (8). It will say "now executing" and you will have this style saved with it's name in the bank called user styles. I just did it as I wrote it and I can play the original preset with a normal bass sound and my user style with the same name with a synth bass sound. You do not need to do anything with a registration memory for this to work. You must be missing a step somewhere so I've documented the entire process here for you.
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George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
www.kayesmusicscene.com
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)