Thanks GTS. Maybe we should have researched sealants better. This was one of those cases when we went to the local parts stores searching for whatever fuel resistant sealers we could find. The #80016 was the only option here. I might make a run to Columbus today to see if they've got any of the #85420 there. I hate having to re-do repairs but it'd be a lot easier to do it now while the tank is still out.