The struggles on the PP, IMO, are attributed to losing faceoffs. Consistently the Jets lose the first face off when the PP starts and they lose 15 PP secs right off the bat. Guys are scrambling to get into position and the opposition PK forces the Jets into making mistakes as they enter the zone. If they can rectify the faceoffs, they will be more relaxed on the PP, and not as scrambled.
Also faceoffs in general have been a problem for this team. If they can start winning more draws, they can start dictating play, because they have more possession.