Yep, the PJ is not user friendly on the idle dept... Very sensitive to temp/alt changes too.
Back when I ran one... I adjusted the T. cable to hold the slide slightly up so it woudl idle.

Good luck

 

You might check to see if any of the tubes to your carb are sucking to the frame after you start it, this could cause it to poor out the breater tube. Also you might want to try both, adjust your throttle by screwing it in about a half a turn to a turn, or change your main jet to a 260 if that's not alread what you've got in it now.