I am printing a different assortment of sizes and shapes for my invention. I notice that the larger the printed object, the affect of warping is magnified. Are some PLA filaments more stable than others, such a natural vs. colors? I am currently using black, and have a spool of white on the way. I have attempted to use both blue painters tape, and now i am currently printing directly to Plexiglas. The picture shows the item peeling off of the plexiglas on the left side even with tacky glue on its edge.