Check the easy stuff first and the area most recently “touched”.
With the symptoms you describe, my money is on the battery terminals. Disconnect the terminals. Clean them and the cable ends up with a wire brush. Re-attach and get em tight.
One thing for sure, using the clips will sure shorten the installation time. I may have been a little too meticulous with the rivet install as I measured numerous times while mushrooming the rivets. No regrets, but it took considerable time and patience.
Off topic - but only a little..
This thread is like a case study in what a forum SHOULD look like when it comes to helping one another with our common love of all things “Motor-bike”.
I‘ve owned a wide range of makes over the years and as a result have belonged to and followed a large number...