Using a 4mm brim and really making sure I rubbed in the blue tape. I successfully made 2 150mm wide prints without any warping.
I have also been playing around with the infill settings so I can speed things up a bit. Using a 35% infill I noticed a lot of breaking up of the infil on the interior of the print. Slowing the print speed on the infill helped some. It was set to 80mm/s I changed it to 65mm/s. I am using .25 layer height on .50 nozzle with 1.75mm filament. Is it normal for the infill to break up some on small layer heights?