So, I have just started learning how to use Therion. I started by surveying a small extension I found a week ago or so as it seemed like a fairly straight forward passage. I am having trouble with one of the areas I have told Therion to fill with flowstone... You can see in the attached image...

Hi. I'm actually from Australia, caving in Canada (Vancouver Island) at the moment. Hoping to get over to the UK for some caving some time... anyway, I was reading this post: https://ukcaving.com/board/index.php?topic=21812.0 and it seems like there has been a number of people who have had a...