Talas Wheat Paste No. 301

I've been asked to bring my recent books to a professional group next week. I like them enough that I actually want to finish them...which means creating some wheat paste to paint the covers of Book #4. At Penland, every batch of wheat paste was speckled with lumps. We sieved them out and moved on, but oddly, this fresh batch at home is lump free! I wonder if the difference was the weather?