i have a dmt325 i use to lap my nani ss stones, will this 325dmt lap a barber hone? Question #2 a friend gave me another hone today and it is made by SRD (dreosher), it is 1 by 5 or so and it says Extra Extra fine and its yellow and glued to it is a BBW i think,so it is a combo stone,just wanted if to know if you think the yellow stone is a coti and can it be lapped with the 325dmt,thanks