[HDCVO]

Same issue here. When at highway speeds, a vacuum is created at front of roof. TPO was not glued correctly causing a large bubble. In my case it did not pull loose from front edge, but rather the bubble made contact with air conditioner edge. Cut TPO on both sides. Contacted dealer and Keystone. Reply: OUT OF WARRANTY PERIOD. I have temporary fix with Eternabond while awaiting legal counsel.