I have had carb leak problems on my brand-new bike engine. Earl was a great help in writing and sending videos to diagnose the issues. The stock carb continued to leak no matter what I did so I just ordered a replacement for $20 thinking it must be defective. The replacement looked to be a better quality in appearance. Yet, it too leaked. After a number of attempts to diagnose and remedy, it continued to leak as the stock unit did. Earl patiently worked with me, had me do some videos and determined it had a damaged valve and promptly ordered a replacement. He is so helpful. I appreciate his prompt response and willingness to help. Part defects aren't BikeBerry's fault.