This is plain PLA filament. (though I have had it do it with ABS also)
I run PLA at 190. I have not played with the temps all that much, I have sliiiiight stringing, so I dont think I should raise the temp anymore.

Far as I can tell, it seems to kink/bend right above where the metal of the nozzle starts, basically right below the extruders hobbed bolt.

So, I think printbus, you might be onto something here, I will look into adding that section of tubing like you mentioned.

I used to have it slip, alot, but tightened up the tension bolts, now, I dont think it slips, until it has a jam.