Hi fellas, well, as an update, the latest trip to the dealer (they pulled the carb and did a thorough cleaning this time) seems to have fixed my 2166, I was mowing the other day and it was quite warm, and no problems (crosses fingers). But, just in case there's a little more gunk in the carb, is there anyone that recommends that I DON'T use a little sea foam in the gas to help clean out that carb so I make sure it's sparklin' clean on the inside?