I live in the Mojave desert where we can routinely see temps of 110F or higher. Last year my right lid began to separate, so I installed nice black anodized screws and lock nuts. I drilled two holes (one on either side of the Yamaha strip) on each bag, and then tightened the screw just enough to see the lid compress. On the inside of the bag I sealed the nut with RTV. I know most don't want to drill into their bags, but I wasn't going to deal with glue, and that it might separate again in the heat I deal with... This is just my solution to this problem...and hopefully it offers others another option.