Up on the highveld a 32 deg advance will ping, guaranteed, stick to 28 max.
Stock dizzy under the seat is cheap insurance, the trick to this ignition set up is to fit a resistor with the coil, and not use a elec. ignition coil, a new points specific coil sure helps, don't get the wires mixed up, and as you already know don't leave the ignition on while motor is not running.
I had had one of these on my Spyder for 4-5 years reving to RPM 6700 until I sold the 1835 cc Sub assembly, had about 18000 kms on it. It was then put on a buddy's beetle with same setup, still running some 3 years later.
Another has been running for about 5 years on Joe's beetle.
A front disk upgrade will be an upgrade I will allways recommend, big time, braking performance will allways be there when you need it, even a well seup drum is only setup for a short time then will need to be tweeked again, often to keep it that way, disks you fit & forget about it.
Disks is the best investment you can make on any aircooled.
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)