Hello people, I always have problems with the fast gas with my 450er exc (2005). it always swallows itself. no matter if at little or at higher speeds. if you give slower gas, it goes. it turns then also fully high. main nozzle is ne 178er I cleaned, accelerator pump membrane also in order and clean. achso air filter lid is mounted with the holes and a sp-end damper (pre-owner) which problem could that be?HD for the damper too small? thanks e for your help!