I am certain the LSN has been adjusted. My neighbor has claimed that honor. I read that the factory setting is to make the needle head flush with the carb barrel. It is out a bit from there so it is likely loading up at the low end. So, I have compensated by going too lean on the top end I suspect (1.75 to 2.0 turns out) hense why it takes off, when the igniter is attached, then stumbles and tries to die out if I go to full throttle (running out of fuel). It will stay running in a low/mid range without the igniter.