Hey Wingmaker,
Sorry for the late reply! I was kinda busy and on holiday.
I’ve tested your suggestion and did both calibration tests, but for some reason I still get these weird artifacts on top of the letters… I even did an ironing test with one of the models on Makerworld and a swap came out nearly flawlessly, but when I tested it on the letters I got an the same issue! Yours look perfect! What ironing settings did you use? Maybe I can fidget a bit with that… I certainly don’t know what I can try other wise as I can clearly see yours are perfect… Thank you in advance