Hi all. I just found some damage from a boring bug. The affected plant is Chinook and only one of the vines was damaged. From the entry point upward, the whole vine is shriveled and below is fine. As you can see, they throw out pretty long sidearms. Quite a few years ago I had a very similar problem and after 4 years of detective work found it to be European Corn Borer. This may or may not be the problem as we have no suspects at this time.