Extrusion problems without raft

<span id=“result_box” lang=“en”>Hello everyone, I recently replaced the extruder mk2 with the mk1 but unlike the first this last can not print without raft. I tried all the offsets but nothing. The dish is leveled well. What I do not understand is that with extruder mk2 it prints well even without raft while with mk1 no. Is anyone aware of this problem?</span>