No spark after ~2min

Full Tuck /
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Puch E50

HPI mini rotor ignition

push button kill switch

stock Puch wire block connector for all wiring, non of those clamps

resistor plug boot

history:

first time this happened, it ran over 4 miles an all of a sudden wouldnt do over 25mph (normally hits 45mph)

4 miles has now reduced to about 50 yards and no firing at all

testing (recent):

takes a few pulls to start, kinda weak but fires up

tested with a timing light after it quits -> no spark

stator replaced (new) => no change

swapped in a different cdi box => no change

thoughts:

do HT coils ever go bad?

its not running long enough to get hot.

i havent tried disconnecting the kill switch...i hope thats not it

i cant really check the CDI box(s) with a multimeter... maybe they're both bad

motor was completely rebuilt, im pretending thats not causing any new problems

im not sure i ever checked the spark plug

ok i think i have a pretty good list of things to check, yall are welcome to tell me im an idiot and list off things i forgot

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