Mingo, I described your problem to my dolmar dealer, he is guessing your air filter is clogged/soaked with fuel (spit back from the carb). If it is the small one, you can clean it. HD, get a new one. He said he gets this a decent amount, the saws either flood easily or have little power.
I asked about his opinion on the reliability (also a Husky, redmax, echo and shindaiwa dealer), he said the Dolmars are pretty tough, the biggest negative to him is the AV. Too many broken mounts and he said they need limiters screws like husky uses. He pushes the huskies now as he can't get new 7900's (no backordered till August), but the huskies haven't been perfect. Crank issues with 372xt's, a couple hard starters. He caters to a large group of loggers, so he sees a lot of abused saws.
When it comes down to it, sometimes you get a lemon. For me, if I find something I really like and it's reliable, it's hard not to continue buying that. As of right now, I have too many 70cc saws, (576, 575, 372 x 3, 7900 x 3, 046). The 7900 and 372 are my favs.