I received my Taz 5 last week and have been using cura with the recommended profile settings and after numerous changes I finally got it to print parts with pretty good success but I have random issues with the first layer. Sometimes it lays flat in one area and then starts warping in another or vise versa. Almost like there is a chemical causing it to peel. I have tried sanding with 2000 grit which helped some and then tried using acetone to wipe the bed down which has also helped a bit but the issue still remains. Maybe someone can provide some insight on what might be wrong. Other than that the rest of the part seems to print just fine and all the other layers look great. This has though caused a few parts that were thin to release from the bed and eventually warp. Below is a picture of what I am experiencing.