I'm trying to set the timing on my 77 FI Bug. I cleaned the points and set the gap. I used a timing light but if I set it to spec, the engine idles real rough and almost seems like it wants to stall. I played with the 'idle' screw and tried to keep it between 900 & 1000 RPM. The engine seems to run OK, but just a bit rough when it idles only if I adjust the timing by 'sight & feel'. As a result, it's not at the correct mark on the pulley.
Am I missing something? Do I replace the points?
I've done complete rebuilds on engine and bodies, but the timing, always seems to be a pain for me.