I have a 2005 arctic cat M6 with 600 miles and it has started to bog at 6400 rpm. Sometimes when I get on it from the start it does ok. But if doing around 30 mph and then get in deep snow and lay into it , I can only do 6400 rpm and 40-45 mph. Seems like its burning real rich too. Cleaned plugs and it still does same thing.

Anyone with same problem?