Thank you all for your help. I was hoping to have some response from Sullivan's by now, but all I got was a quick e-mail telling me someone will be getting back to me. Guess I will wash one of the squares to see if it comes out before putting them all together. Will let you know what happens.

Well, still nothing from the mfg other than the e-mail telling me they would have some respond. So I washed one of the squares in a mesh bag with other laundry and the yellow did not come out. So I am upset - will have to do them again.

I've gone totally glue basting with the Elmer's School Glue. I've seen posts somewhere on here from a few who actually thin it down and put it in a spray bottle. You might try that...and it's cheap!