Hello from LE, my first Tomos

[Wolfram]

https://youtu.be/pZ1CKD-dgy4
It's running!

[shadowranger]

Nice!

Have fun driving.

[Wolfram]

Hi all,
that moped really makes fun. So easy to start and simple and robust technique. I like Tomos!

[Wolfram]

Salut drivers, after some work on other projects, I had again a look at the tomos who is used by my neighbor. It starts perfectly but it doesn't turn high enough. I assume maximum 6000 rpm, then it starts stumbling. Maximum 59 km/h on the meter, maybe 45 real. Carburetor is clean, new Dellorto 15 mm not original and flow of gasoline is also fine. Can I adjust the ignition point perhaps?
I'm open for some hints for improving.
Regards/adios/cordialement wolfram