This is a new install. Have never had the dish installed on the ota antenna mast. The antenna mast's coax does run through a ground block and the mast is grounded. I am attaching the sat dish via u bolts and plan on using another ground block for the sat coax. The current ota ground block will be next to the new coax ground block so can I just run a small 17 gauge ground to the old ground block?