I went with the Permatex as Anna suggested and it worked great. Perfect consistency, at least at room temp. Easy to work with, no smell. A 1.5 ounce tube was just enough for an OWare 9x9 tarp including the custom beaks. Some of that remained in the tube and some was wiped off as waste so the total weight added was less than 1.5 ounces.
Highly recommend the Permatex.