Hi Curious Aardvark,Many thanks for the advice. I'll try cooler and slower and also see what can be done to the model too. I've also made a smaller model just a bit larger than that problematic section so at least I don't have to print quite so much of the model to check for improvements!Appreciate your help!PS How do you get the message to keep the format you typed it in!? All the spaces and line feeds have gone!