I just received my DJI Prop Guards, and it came with a spool of string-was wondering how many use the sting? I already know about the different length screws-so I won't be making that mistake. My thoughts about the string were, that they increase the rigidity of the arms slightly, off setting the additional weight...?? Just seemed like a good idea to tie them all together, to reduce the amount of bounce/jiggle that will occur on the arms due to the added weight. The one thing that concerns me is-a broken string getting into the prop/engine, causing a single engine failure-and bad crash. Any thoughts? I'm aware they can get hung up in a tree.....other than that-good idea or bad idea to use the string?