I recently did a job for a school using white Premium Plus on a 100% polyester shirt. It went great. The customer ordered more, and wanted a few done with hot pink lettering. I ordered some hot pink and made their shirts. I did them all using the same temp (300*) and time (15 sec). I got a call yesterday that the pink ones were coming off after a single wash. I did a test here today, bumped up the temp to 320 and put both a white and neon pink logo on a shirt. After a single wash I am getting edge lifting on the pink. HELP!!!