I have a 2014 Puma FTD and a BassCat cover with ratchets to tighten. How tight can you get them? My straps are so tight that they feel like they could break anytime but, going down the road at 70mph the cover lifts up in the middle on both sides far enough that I can see the colors above the rubrail. Anyone have these covers? Same issues? Or am I doing something wrong?