After I installed the software and I got all the bugs worked out and was able to try a test print. I noticed no filament coming form the hot end. On about the 3rd layer filament finally came out of the hot end. I thought maybe I did not have it inserted all the way. So I tried another print. Same issue. This happened about 4 times, even after I advanced the extruder till filament came out of the hot end. On the next test print I released the tension on the extruder and manually pushed the filament until it came out of the hot end and the print worked. I can only get a successful print when I do this. Any idea what the problem is???