extruding problems with cheeta flex

I have been using a flexible material called cheetah flex and I cant figure out what the problem is. I don’t know if I have been over or under extruding because it is not failing the hole print but it will fail to print a few layers. Here are some pics of what I’m saying. I have tried heating and cooling it and I have also tried adjusting the speed but nothing works idk if the e-steps are perfect but I have been using the e-steps that the heads came with if you need additional information let me know and I can give you that.