Starters do go bad.
batteries can have a dead cell and still read 12 volts on multimeters, but when you load test, they show the real result of bad.
Riding and loving my 2020 K67 with the custom XWORKS ECU
Check out MotoMillion ( forum Vendor section ) for all your needs in ECU work
Check out MotoMillion also has programming for RCK3 / HP power Kit enables now
Programmer for MotoMillion is myself ( BMW_388 )
I personally own the 2014, 2015, 2018, 2020 S1000RR
This makes for checking my ECU work is perfect every time sold by MotoMillion