It appears that you are facing a problem of blisters while running, with the liner having various shapes and a loose and unbounded area that bulges irregularly away from the flute. This can be attributed to various factors, such as the lack of heat, which can be resolved by checking the steam pressure and quality. Similarly, if the gel temperature is too high, it can lead to blisters, and you would need to check the gel temperature to resolve the issue.

Another possible cause could be a wet liner, which can be resolved by increasing the heat to the liner by increasing the warp. Additionally, if the tension of the liner is not uniform, it can lead to blisters, and you would need to check for any misaligned machine components or improper wound reels. By addressing these causes, you can effectively prevent blisters while running and ensure a safe and comfortable experience.