Fair enough. I used to run the Mitsu liquid gold as well, and I know the "notchy" feeling you are talking about. Like you, I also have a short shifter (B&M set at 50% less) which definitely exacerbates the issue.

I switched to Amsoil 5W-30 Synchromesh and I have noticed an improvement over stock. Much smoother shifting.

Something to keep in mind.