Problem when two companies involved with structural integrity of bike as the case with Yeti and Shimano. Yeti, says not their issue with frame, but defers to Shimano for remedy which sounds hit or miss. I had similar issues with my Trek Rail2 and Bosch. Had to wait on Bosch to remedy the situation even though I would argue it was a Trek problem with how the frame was built to hold the motor with easily failing motor mount point inside of frame that would compromise the motor when mounting points failedTotally agree with Steve
My first Yeti motor (EP8) was 670miles, then within 6 months I had 4 motors ranging between 12mile and 60mile, Yeti were totally unhelpful and shameful given the price you pay for one, I sold it, went over to Bosch and vowed never to buy a Yeti again (I previously owned an Arc, SB6 and SB130), you could say I was a Yeti fan but I'll never buy from them again!