I've been having some issues printing the scaffold support material and it not adhering to my PLA prints. After reading through some forum posts I have adjusted my temp, speed, and density and am running a test print with lots of support to see where the support is running into problems. I took this picture mid way through the print. Tt looks like 3 of the 4 sections of support are printing properly but it is failing the the front section. any ideas what the issue could be?