Did some serious maintenance on the ebike, Pulled the hub motor for cleaning and inspections, pulled the freewheel for cleaning and greasing, cleaned and oiled all pivot points in the suspension, went through the chain and chain ring (found a bent tooth, explains the occasional chain pop) and gave the entire thing a good cleaning. Installed a new front rim without quick disconnects, i like the standard bolts for this setup, and it matches the rear rim. Installed new "thorn proof" giant tubes, awesome, about 4x thicker than standard, and threw on a pair of knobby tires so I can access more rugged terrain. The knobbies make it a totally different machine, not quite as efficient but the fun factor has doubled! The new tubes and tires also solved a random noise I had at higher speeds when hitting a big bump. Apparently I was hitting the rim, since this new beefy tube/tire combo the noise went away. Lesson learned about tires and tubes!