Weak spark?

[MattEaton_]

How’s everyone doin?
I’m jumpin through hoops trying to find out what’s going on with my front cylinder it was fine for a week now it’s back again, it runs mint I rebuilt the carbs and synced both of them after winter, so what’s goin on is once the bikes hot it looses power and the front cylinder just gives up, wait a few minutes and it idles and rides fine for maybe a quarter mile then it happens again, I’m getting spark, when I unplug the front spark plug wire it still idles with out changes and when I unplug the rear one it stalls, I’m getting fuel as well, if anyone’s ran into this issue it’ll be awesome to know what’s causing this

[navigator]

Unscrew the plug boot from the high tension plug wire. Trim 1/4" off of the end of the wire. Screw the boot back on. The pin inside needs good contact.

[hillsy v2]

Also check the power wires / connectors to the coil. I had one where the wires were cracked at the connector under the insulation and would intermittently lose connection. Was a nightmare to find. Also had a coil that would break down when it got hot so it might also be a bad coil.