i just bought a klx 250 r. rode it at home for about a month then headed up in the altitude for about a week and rode every day. when i was up there it ran rough snd rich and sense it ran like new at home i expected it to run good when i got home.nwhen i got back it ran like ****. it was hard to start, would not idle and ran rough anywhere bellow 1/2 throtle. so i changed the plug hot tanked the carb cleaned out the tank cleaned the air filted and changed the oil dose any one have any sugestions.