SNIP

    Paul,

    You indicated the need for a bottom Tap on the blind hole in the
    housing.  If you continue to deepen hole for the tap, it will enter
    the Case Bolt Hole in the housing.  This should not be a problem.
    See attachment.

    Bill,

    How high is the insert collar above the  top surface when installed?

    Joel

True.

Zero if you don't use Timeserts. Timeserts require a counter bore so the
collar is flush.