Is any one having any rough idle or slight miss at idle? Mine is. They said it is supposed to idle between 580rpm and 680rpm this seems low. Even if this the case the other units i have driven have a smooth idle. Mine seems to have a rough idle. Build date says 01-04. They put it on the computer and said all is fine? No updates for it. THe service guy said there might be one pretty soon. Runs rough any info would be appreciated. Thanks