I have the Makerfarm 8" Prusa I3V. I have been having a lot of problems printing with ABS. I would like to print some spares of the Extruder blocks but no matter what i do, I cannot get ABS to stop warping. My questions it: Do I really need to use ABS to print these extruder blocks? It is my understanding that ABS stands up better to the heat from the extruders. Can these parts be printed with PLA and still hold up to the heat? Are there any long term/short term problems using PLA?

Your advise would be appreciated.
Thank you
Bill