Help please! I made a quilt a year or so ago and after the washing of it I noticed on the back(white backing)there is a small faint yellowish stain of some sort ....almost looks like pickle juice stain. it's not very noticeable you really have to look to see if but I know it's there and if your like Iam it's gonna bother you til you find a way to remove it. Any suggestions? I don't want to use a bleachy liquid on it as Iam afraid it might take the colors out of the pattern on the front. I hope someone has a suggestion as to what I can try.