New to Scooters!

[Pbobes]

Hello all!

I bought a storage locker that had a scooter in it. I am excited to keep the scooter and have a few questions...

It is a Bronc Adventure 150 cc with about 400 miles..so it's a Chinese gy6?
Seems to run ok with one issue. While throttling, it bogs for a second, then continues to accel with no issues.

Next, I have read horror stories about Chinese Scoots, so where can I learn about the scooters as I know nothing!

What would you upgrade first that is very easy? The only thing I care about is reliability.

Thanks for all your help!!