I am getting two white streaks on my prints. They are not very defined but very visable. I am sure it is some thing with the path of light but I can't find it. I did some different sizes to see if maybe it was the paper. It reduced proportionally with the print. I took apart the enlarger and blew it out but it was still there. I can't see anything when enlarging it on my board. This is starting to drive me nuts.