OK inspired by everyone, I did not glue the last two rows and I used only ONE pin per intersection. I did walk the machine over it but it wasn't too bad. I guess. Anyway all of them came out fine except one was less than 1/8" off...AND I LEFT IT. I didn't rip it out. yay! I need to put the borders on and then I'm DONE with this top! And I can start working on my Christmas projects.