Sorry for late feedback, a Blizzard and a trip to the workshop(other issues) has got inbetween.
Anyway, this time i set the inital timing to 10 degrees at idle, it obviously was close to 0 before, connected vacuum-meter to the brake-booster hose, not the PVC-hose that I used before.
After som fiddling with the timing and adjusting the idle-mixture screws, I think I found an acceptable sweet-spot where it idles quite smooth, runs well in traffic and no kickback att all on cranking, and no audible pinging.
