[Al One]

Check the help:

https://helpx.adobe.com/premiere-pro/using/default-keyboard-shortcuts-cc.html#id_59238

I’m not sure if PPrCC will map the mousewheel. Maybe try the up and down keys.

I have a mouse with many buttons and a tool to macro those buttons. I’ve got different profiles for AE, PPr, and Wolfenstein 4 😉

A mouse with macros is better than changing the default shortcuts, because you’ll find your way even if it is not your system you are working on, when you are still used to the default shortcuts. But that is just my opinion.

Cheers.

Al