Hi folks, I have a 1981 911SC to detail and it has some excess adhesive around some of the rubber door seals and the seals in the sunroof. It probably is not the original adhesive but I am just not sure, it is fairly hard and dry and I am looking for suggestions on a solvent. I have Rapid tak, Xylene, IPA, paint thinner and goo gone etc in my bag but just not thinking any of these are going to soften it. Thanks in advance, Peter