NO the condenser is NOT BAD. And you've done diddled with them handy-dandy carb tweek-ums. BAD BUOY !!!
Now pay attention......set yer down-pointing MAINJET to 2-turns and LEAVITT!!! now adjust yer side-pointing idlemix for MAXIMUM idle rpms; then adjust the BEHIND the carb idle speed for an incredibly SLOOOooo 400-rpms. (ennythang under 500-rpms is good) Do this 3-times!!! The last time I adjusted my eazy starting 6-volt 52-8N, the idlemix screw was about 1/4-turn and rpms on new tachometer was about 435-rpms. It can be done.
Remember the side-pointing idlemix is BASSACKWARDS; out fer lean; IN fer ENRICH. Adjust fer FASTEST idle; NOT smoothest idle. Understand the difference???
Didja know yer weak sister ignition switch has about 15-mins of run time and it will turn the engine OFF? Will restart innna 'bout 30-mins of cool-off time. NEW ignition switch; $15 (cheap) ..........Dell, yer self-appointed sparkie-meister