Seems like most you guys like them, the biggest problems is the aluminum screws and that they do not come with mufflers, really don't understand that because they are needed to use them, on the other side great people to deal with and have work done if needed, all my planes are 30cc or less, is the DA 35 a good engine for the money? I know most of you like the bigger stuff but has many of you tried the 35? And what is your opinion of them?