Warping after lamination

Just got my proxy stuff and set everything up today, and was running some tests with 37 lb, 44 lb, and 54 lb glossy paper and then laminating with 3 mil pouches. Laminating on the 5 mil setting on a Crenova laminator. Nearly all of the 6 pages came out of the laminator warped, even with me using my hand(s) to try and keep it up as it was coming out of the laminator. I also set the pages stacked up with pieces of regular printer paper in between each one and put heavy books on them for about an hour and that didn’t help either.

Has anyone had this experience before? Would yall know what to do about it? Im really happy with the ET 8500 I got and am trying to get the most out of this investment. Also all of the paper/pouches are from Uinkit/Hartwii which according to my understanding are basically the same company.

Thank you all in advance