Thank you! The guard on my bike is missing all those rubber pieces. I'll do what you suggested.The Gen 1 guard is supposed to be behind that lower 'hook'. But there are also supposed to be several rubber, 'U' shaped pieces glued to the perimeter of the guard to protect from vibration rub-thru.
Split 3/16" fuel hose could work.
I also use a 'blob' of RTV silicone on the tiny little upper mounting pin of the guard to the radiator hole to keep them from wearing off/out.