Just purchased a new ZT2250 and I already need to take it back to the Dealership (Erb Equipment), it runs like crap ! It surges and sputters, sound terrible and this is only when its cutting. I'm loading it up and taking it back to see what they can do. I'm very mad and I'm wondering if I made a good choice in mowers. It has a 22HP Briggs in it. Anyone else have problems with this model ??