I recently upgraded from a 322 to a 625 DVR and ever since then I seem to have lost about half of my signal strength. From around 55 to 60 (before upgrade) all the way down to like 34 on average now and when it rains many times it's down in the single digits (with the infamous missing signal error, many times). I'm wondering if I need to be proactive and have it adjusted or is there something I can do to improve it?