hi mate, i live in radcliffe near bury,england, ive got a 1997 trx and mines running rich (to much fuel) at the minute,the carbs on these things need balencing regulary ..so im told, ive got beowulf cans on mine but it was running rich on the standard cans anyway. getting mine sorted with a dynojet kit and set up on rolling road before summer,but ive heard that this could,actually make it worse ! by wearing out the emulsion tubes in the carbs, ill let you know what our local expert says...good luck