The ink shouldnt affect how well the transfer paper peels. How are you preheating the transfer? You are actually pre pressing the transfer? Never heard of that before. It is unneccisary. Just make sure all the moisture is out of the shirt, and that you are using a fresh sheet of parchment. When there is alot of moisture in the shirt, the transfer tends to get sticky, and hard to move around, and when you use an old piece of parchment paper, it can be hard to peel, but other than that I havent had any problems.