[Bdi4emc-help] max pulse rate

i am configuring a system with emc2/ubuntu. when axis comes up it complains that the max pulse rate is 10111 hz. when i reduce max velocity to stay within this constraints my turntable is rotating fairly slowly. my mill is using bd1-4.51 and quickstep and appears to be capable of quite a bit higher pulse rate. does anyone know if this is true or should i look for some errors on my part in the configuration files for emc2. is it straightforward to run emc on a emc2 machine? djs