Occasionally I will get some stray, black specks that look like 1 cm fibers or ??? that transfer to my shirt and basically cause it to become a giveaway.
I can almost stop this from happening by using a teflon sheet with every pressing... but it still occurs from time to time.
I have no idea if some kind of fiber gets on the platen... then burns... then is transferred to the shirt either directly or by sticking to the teflon sheet.
Have you ever experienced this?

Brett