great cylinder pressure, low hours, runs good, but hard to start after running, and if you hold it at like 2500 rpm at about 15 miles an hour it runs great but it sounds like its flattening out for a couple seconds then it comes back, and it just keeps doing it, sometimes stalls on idle, need to gas it to start sometimes ? new fuel pump, new selonoid, someone said it sound like my carbs need sync and lync what ever that is ? any ideas ? thanks
