20 MPH (32KMH) is the published top speed for this Class 2 bicycle. My understanding is that the controller stops providing PAS at 20MPH (32KMH). Here's a bypass for the Rad Runner, if we're assuming it's the same hack for both models:  https://www.youtube.com/watch?v=1BDSllZzRYA

My chain skips now and again. Mostly under hard pedaling, but sometimes just under normal pedal pressure. The click is infrequent and intermittent. My understanding is that there normally should be about 1/2" of chain play, but seems like I'm at an inch or more (haven't measured). Any guidance is appreciated.