Hello
I have an Printrbot metal Plus that im happy with but i wonder what print speed folks use on that printer 
i have tested 120mm/s that works but over that i will loos steps I did see some days ago that printrbot recomend 80mm/s as max speed lol so i have turned the speed down little … but what speed do you run your printrbot with ??
I run print at 50 and the movement speed is also 50. Did you print the antijam piece for the extruder hob?
Nope it is a std printer so far …
I recommend the anti jam alum extruder piece on thingiverse