I agree about the fact that the assembly part can be complicated to follow. I made several mistakes mainly on the orientation of the couplers. I can suggest you to disassemble completly your foldscope and built it again by paying attention to assembly instructions and especially to the orientation and the side of the couplers but also of the lens. The right side to look at is the tiny hole. Once is done, start by looking at it using your eyes to make sure you can focus on something.