Hmmm well the unit ran fine for me this morning for 10 minutes. After I ran it I noticed I left the cooling shroud off so removed the top plastic cover and fuel tank, inserted that and re-attached.

My wife went to use it this afternoon after my stories of how it now runs better then new but it didn't run for long and became progressively worse and now won't run at all. Looking inside the tank the filter was dislodged when I put the cooling shroud back so I'm assuming that crud has ended up in the carby?