Checking for hidden damage can be tricky...it takes some careful squeezing and "massaging" of the suspect area...


What I have done, when I suspected cracked sheeting, is to carefully slice the covering...peel it back...wick thin CA in the crack, then iron the covering back down.

You might need a little extra covering material if the crack extends into an open bay area?
Or...maybe just some clear tape or covering material.