I really like Shimano's customizable assist levels available through their "E-TUBE Project."
- Even when tightened over 20Nm, the top mounting bolt for the rear shock loosened on each ride until I added Loctite.
- Needs a motor bash guard - I gouged mine on the first ride! The clearance is a bit lower than my Haibike AllMtn+, so I'll be more mindful of it on future rides (I also put some Gorilla Repair Tape on, which seems to help).
- The wheel magnet wire routing is funky - it rubbed against the bottom rear shock (and its mount/housing). I wrapped the magnet wire with electrical tape to protect it on those spots, and zip tied it with the rear brake tube so it wasn't flopping around so much inside the rear shock's housing, which is a wide-open catch-basin for debris, as well.
Your post sent me down to check our shock bolts...all tight.
My wire isn't rubbing either, but we have done some mud and slush rides, and the area does indeed scoop up crap.
Did you actually change the settings from the e-tube project? Was the software reasonable? I would not mind turning Trail up and Boost down.
Bikes Direct wrote that they anticipate have spare batteries available by May, but they don't yet know the price.