I just bought a 86 trx 250r from Idaho. I live in cali. and ride mostly between see level to 1000 ft. it has a pro circuit pipe, cool head, and k&n in the air box. Not sure on the dome size and im pretty sure its standard bore. just woundering what would be a good base line for jetting. the guy i purchased it from said it was jetted for 2000' to 3000' so i know its lean, so i havent ridden it, infact i tore it down to get it powder coated.