Hello everybody, i'll be going to an old house this weekend to detect. I've been using my x-terra 70 for about a year now. Have not made any really good old coin finds. Can some of you more experienced users give me the run down on how to properly set up my detector. I usually go right by the book but i seem to be having trouble ground balancing. I mostly use pattern one and three tones. I almost always get alot of threshold blanking and i think i'm not balancing right. Any help would be great.