Greetings. I have a 2000 MT with 100K miles. I've had it for 6 months, bought from original owner that always had it serviced at dealership. It has a new Honda battery. It stutters on the freeway. It used to jerk around and so I replaced the EGR valve. I put in the correct plugs. I've run gas treatment. But still it stutters when I'm trying to keep it in the mid range of mileage....say 75MPG to 100MPG, when I'm pushing it but not letting it go completely out of semi-lean burn. I get good mileage, I commute the same path everyday on the freeway up and over the mountains and I get 68 MPG. The stuttering drives me crazy. Help, please.