I have to drill very deep holes, up to 12 inches. I start with a 4" drill, then an 8" and finish with a 14". I would like to start the longer drills at the depth that the previous drill finished, but I can't get the peck to retract to the top of the part. For example, if I use my 4" drill to a depth of -3.5", then start my 8" drill at -3.45", my 8" drill will retract between pecks to -3.45". How can I get it to retract to 0?

Thank for your help