I was attempting to use PVA in my printer and didn't know what heat to use. Long story short, it melted in the print head. I though everything was fine, I even printed from that head (left) extruder. Now here it is a week later, I went to load my normal ABS filament, and the machine won't take it in. It just sits there and clicks while its trying to pull it in. I removed the extruder assemble and removed the print head. I soaked it in acetone for several hours, cleaned the inside with a qtip and it appears to be clean. I also cleaned the white tube that goes inside the print head. I'm assuming that's some kind of filament guild, it was very clogged so I was able to use a paperclip and clean that out. I'm not sure where to go from here since I took the tip off and cleaned it. I can't see through the hole in the print head, i'm assuming because its so small. What can I do from here? Any help would be greatly appreciated. Thanks