User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-4555457-20120114042456/@comment-4411728-20120114084929

Answer 1: Yes, Jinouga goes into a more powerful rage when close to death, even the original had this. Answer 2: my guess, is that the slime builds up on the weapon itself, and actually does not rub off onto monsters. only after heating up to a point does it explode...thats my theory.