Hey! So I'm having some problems with my 1980 Sachs sundancer - before it would run for about 20 minutes or so before it would kind of kill and not be able to start up again for another 30 minutes - I figured it was a condenser issue so I just replaced it - but now it's been running weird. It's been running really rough and after it stalled out again I checked out the spark plug and it was thick with carbon - a problem it did not have previously. I messed with the idle screw a bit to see if it helped and it did very little for it - it's still running really rough and shoddy and I can't figure out why. By the way - I should mention that I did kind of a crappy soldering job on the condenser the first time around (it ran just fine after that) and it kinda came undone because the flywheel hit it, so I re-soldered it (did a better job this time) and now I'm having these problems. I know that was long winded - any advice?