Hi all. Sorry to add to this lengthy discussion. I've got a 2018 s works levo (less than a year old) and its just started happening to me. Video from Peter Hill is similar, and can feel the vibration through the pedals. I can't for the life of me figure it out. The chassis feels bombproof. Happens without or without the motor, on any gear, under pedal tension only (on the stand, without tension all smooth) I've tried replacing the chain, pedals, tightened the chain ring bolts and crank, removed the chain guide and loosened (and tightened) the RHS plastic cover as per above recommendation. Still happening. To me, it points to a bottom bracket but i've been told it's very unlikely since the unit is so well sealed. Can do without going into the motor area if i can avoid it. Any other suggestions in addition to what's already been discussed would appreciate it! Cheers.