So my trunk started to leak the other day when it was raining. I found the crack underneath the rubber trunk seal. It is where they welded two pieces together and over time the weld cracked. What is a good sealant to put on to seal it up? I was looking and found this stuff by JW Weld. It says that is seals and hardens enough to drill through. Would this work or is there something that is better? I tried to just use silicone, it lessened the drip but did not stop it completely.