I ran into the same "won't work" on eBikes not purchased here or not the same brand. I had a rear flat tire on my wife's new Ecotric 20" folder. I finally "sold" him on sealing the front and rear tires with sealant , no flats since, $64. I paid without protest knowing that was the last dime of mine he would ever see. The liability excuse I was offered was just that, an excuse. Any PA's out there still taking contingency cases on suing Mom and Pop stores? Any consumers out there willing to retain an attorney over the repair made on a $1200 eBike? The real reason is that your being punished for buying outside the dealer network. It took a little time for some LBS principles to figure out a $50-70 set up fee for internet bicycles (accoustic) was more profitable than telling the potential customer what an idiot they were for buying online. Consumers don't care about investments or expenses to run shops, Get over it. The first LBS that stocks some Bafang hub motors, controllers , sensors and displays is going to see their mid drive sales increase. I can't think of a better opportunity to offer a mid drive demo, before repairing their hub drive bike. After the repair is paid for offer to take a trade. Of course non of this matters in a sellers market, but those end.