Hey guys, I'm a little confused right now on steerer tube cutting, i asked my local bike shop how much it would cost for him to cut my steerer tube and he said £20 so i thought i'd rather do it myself. So i figured out from other posts i searched for that you put the stem on draw a line round that and then cut it with a hacksaw? i thought thats easy then i thought how do i know were to bang the star nut to, so i would like to know how do i know when ive banged the starnut far enough and how do i bang it down? cheers lawrence