There you go ... just turn the dizzy small increments at a time.
If you think of a clock - maybe 5 minutes each time and backwards.
You can't hurt anything that way and you WILL hear the pinging (screeching) sound, no doubt, if you have advanced too far.
When you advance timing, engine rpm will go up a little, so in the end adjust your carb settings again to around 500rpm at idle.
