Try the suspension bolts attached to the shock, a bit of grease will usually help. They were over tightened from factory and creak and click occasionally.
The Bosch system sees all connected batteries as one so it bill burn both down simultaneously, but as your Range extender will be smaller than the main battery it will expire first. Your app may show you the level of each battery but I’m not sure.
I agree with Irie above, two things I would check:
is there really sufficient gap between the top cap and steerer tube
as you’re tightening your top cap is the star nut being pulled out.
one bonus suggestion is make sure your headset bearings and expanders are all seated correctly.
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Bike / Product Year: 2024
Manufacturer Bosch
Model Performance line 75nm
Asking Price £250
Location North Birmingham
Description Faulty but unused, zero miles, Bosch performance line motor for sale. If you have the capability to strip for parts or debug the Software, then...
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Bike / Product Year: 2024
Manufacturer Yamaha
Model PWX3
Asking Price £250
Location North Birmingham
Description Faulty but unused, zero miles, Yamaha PWX3 for sale. If you have the capability to strip for parts or debug the Software, then you’re more than welcome to give it a go...