Will check that out Rich - thanks!
yeh, I also had some degree of success with Melee's macro that is effectively a G83 with a rapid feed to get over how slow the mach3 lathe peck drilling programs are. I got stuck with trying to pass variables into the macro though so eventually moved away from it. This was my post at the time >
http://www.machsupport.com/forum/index.php/topic,32226.0.html. It sounds like there may be one which is closer to the G82 program - where it's effectively adding a pulsed dwell time on the way in rather than retracted. Will need to take a closer look at them too...
Very impressive 'homemade'
Toolchanger Hood.