I have a 2+ and it prints great with all nozzles but the .25. I have never been able to get the .25 to work. I've tried a couple different brands of PLA. Here is an example. The brim printed OK (it often doesn't), but then it fails to print correctly. I was using 195 degrees, but have tried other temps a bit, with no success. This heart is one of the examples included with my machine. Any suggestions would be appreciated. Thanks!