Hello, new guy here and I'm thankful to have found your forum. I own an off-grid ranch secluded deep on a Montana mountain. We've been living on generators and battery banks/inverters (that charge from the generators) and I'm in the process now of installing a complete solar power system. Since I'll never be able to eliminate generators completely (for farm equipment/welders/etc.) I bought a system just to meet the needs of my house to at least eliminate running generators at night (after awhile you can hear them running even after you turn them off!). I ended up purchasing the 4.43kw "Homesteader" package from Wholesale Solar (https://www.wholesalesolar.com/1891...-kw-15-panel-solarworld-off-grid-solar-system). After much comparison, I came to believe that this is a well engineered system but I'm certainly no expert which brings me here to this forum in search of assistance. The salesman Jeremy Allen is clearly knowledgeable and courteous and is willing to assist with specific questions. The trouble is, I don't possess the skill set yet to know what questions to ask. I own a commercial refrigeration and welding company, and I've worked as a Journeyman electrician and certified welder (both pipe and structural), but the specifics of solar power are new to me. My only complaint with the system from Wholesale Solar (at this point, at least) is that the accompanying instructions absolutely suck! There is no step by step detailed instructions on how to install their system and they instead refer you to the manufacturer websites of the individual components in most cases and I find this unacceptable. This is my log cabin home. The red square in on the hillside is where I plan to install my solar panels (the small solar panels in the picture no longer work). The hillside faces almost perfect true south and around a 45 degree incline (being near the 46th parallel, I need a 46 degree slant as I understand it). I want to begin sinking my piers, but I'm having difficulty determining spacing and true square. The Wholesale Solar website refers me to the Iron Ridge website, and the Iron Ridge website appears to assume previous working knowledge of installing solar panels. Perhaps I'm just overwhelmed with pieces, parts and stacks of papers and cannot see the answers that should be directly in my face. Any advice on setting my piers would be much appreciated. The CAD drawings assume level ground so the front to rear spacing would be different than when mounted into a hillside if measured laterally across the ground. I suppose I could extend the first level of piers upward and measure level across the top, but am hoping there is a commonly known geometric formula to simplify my measurements. Any other advice and recommendations appreciated.