I just installed three 48 inch rails and one 84 inch rail. Took me all of 45 minutes. It could not have been easier. It's the most economical system on the market. I agree that the last hole on the rail does not line up but seriously, is that a huge deal??? I just made sure to use an anchor at the end and I double dup on the three other studs that I did hit, I put one screw in above and below, problem solved....I'm hanging extension cords and shovels not 100 lb. dumbbells! Love the product.