I was just curious if this was normal:

I was having a tough time shooting with the multiple pins in my sight. There were some problems with the tuning of the bow, but that wasn't all. Once I got the tuning issues taken care of, I was still having difficultly visually with the multiple pins. Finally, I took all but one pin out, set it at 20 yds and the troubles went away. I learned to shoot shooting one pin. Is it normal to get used to an "open" sight window and is there anything I can do yo get used to multiple pins (maybe even just 2 or 3)??