Finally received the grommets for the VOR antenna wire. I purchased these from Waytek (www.waytekwire.com) along with some other supplies. It was a quantity 50 minimum order so I hope I need to use this in a lot more places. The grommets are 3/8″ panel and 1/8″ bore diameter so the RG400 wire fit very well. Glad I waited for the right part and didn’t try to fix it with adding heat shrink to the cable.