Anyone having luck with Ninjaflex or Semiflex on a Printrbot with the Ubis 13

Anyone having luck with Ninjaflex or Semiflex on a Printrbot with the Ubis 13 and Alu V2? I keep getting jams. I already did a cold pull with PLA and ABS and disassembled the hotend to make sure there was nothing causing clogs. I have retraction turned off and attempting to print at 12mms. Any advice is appreciated.

Hello ye kaise 3d print kara hai

I have had success with semiflex at 20mm/s, 1.25 flow rate, and 6mm retraction at 225degC on my simple metal with the original ubis hot end and the new aluminum extruded block. I was actually just printing some semiflex earlier today.