"any more advice or hints while doing this?"
Like I said, it's a very simple repair. If you're not familiar with working on scoots, I'll add a couple things:
Tighten the side case bolts (on re-assembly) like you would on the head of a engine. IE, snug them all, and tighten in a criss-cross patern. And torque to specs if possible. Torque isn't absolutely necessary here, but if you know it and have a torque wrench...do it. (you're going to need a torque wrench with NM or inch pounds on it) If not, be sure to get the bolts snug good but don't overtighten! (again, in a criss-cross patern) They can and do snap if overtightened! Leave the reefmaster in the tool box.
Make sure to replace the o-ring/seal on the shift shaft too. Good luck to you! It's a piece of cake actually.