Welcome back to the shadows!
Yup, I think anyone would be rusty after a few years away. Heck, I just finished a 4th ed. campaign so I keep getting the rules for 5th mixed up in my head with 4th.
No shame here. You weren't the first, nor will be the last, and it gave you a reason to hop in here and talk with the rest of us, so that's something, right?
Crunch~